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Finding the Fourth Proportional to 198,986,871,406.80, 298,480,307,110.20 and 198,986,871,406.80

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Solution

The fourth proportional to 198,986,871,406.80, 298,480,307,110.20 and 198,986,871,406.80 is: 298,480,307,110.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,986,871,406.80 : 298,480,307,110.20 = 198,986,871,406.80 : x
  2. Step 2: Convert to fraction form
    198,986,871,406.80/298,480,307,110.20 = 198,986,871,406.80/x
  3. Step 3: Cross multiply
    198,986,871,406.80x = 298,480,307,110.20 × 198,986,871,406.80
  4. Step 4: Simplify right side
    198,986,871,406.80x = 59,393,662,488,399,535,144,960
  5. Step 5: Solve for x
    x = 59,393,662,488,399,535,144,960/198,986,871,406.80
  6. Step 6: Final answer
    x = 298,480,307,110.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.