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Finding the Fourth Proportional to 368,401.80, 508,393.60 and 207,256.80

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Solution

The fourth proportional to 368,401.80, 508,393.60 and 207,256.80 is: 286,013.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,401.80 : 508,393.60 = 207,256.80 : x
  2. Step 2: Convert to fraction form
    368,401.80/508,393.60 = 207,256.80/x
  3. Step 3: Cross multiply
    368,401.80x = 508,393.60 × 207,256.80
  4. Step 4: Simplify right side
    368,401.80x = 105,368,030,676.48
  5. Step 5: Solve for x
    x = 105,368,030,676.48/368,401.80
  6. Step 6: Final answer
    x = 286,013.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.