Home / 299,098,860.80-448,648,291.20-128,897,772.80

Finding the Fourth Proportional to 299,098,860.80, 448,648,291.20 and 128,897,772.80

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Solution

The fourth proportional to 299,098,860.80, 448,648,291.20 and 128,897,772.80 is: 193,346,659.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,098,860.80 : 448,648,291.20 = 128,897,772.80 : x
  2. Step 2: Convert to fraction form
    299,098,860.80/448,648,291.20 = 128,897,772.80/x
  3. Step 3: Cross multiply
    299,098,860.80x = 448,648,291.20 × 128,897,772.80
  4. Step 4: Simplify right side
    299,098,860.80x = 57,829,765,506,205,840
  5. Step 5: Solve for x
    x = 57,829,765,506,205,840/299,098,860.80
  6. Step 6: Final answer
    x = 193,346,659.20

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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.