Home / 249,716,780.20-374,425,871.10-128,784,428.20

Finding the Fourth Proportional to 249,716,780.20, 374,425,871.10 and 128,784,428.20

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Solution

The fourth proportional to 249,716,780.20, 374,425,871.10 and 128,784,428.20 is: 193,099,645.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,716,780.20 : 374,425,871.10 = 128,784,428.20 : x
  2. Step 2: Convert to fraction form
    249,716,780.20/374,425,871.10 = 128,784,428.20/x
  3. Step 3: Cross multiply
    249,716,780.20x = 374,425,871.10 × 128,784,428.20
  4. Step 4: Simplify right side
    249,716,780.20x = 48,220,221,712,900,408
  5. Step 5: Solve for x
    x = 48,220,221,712,900,408/249,716,780.20
  6. Step 6: Final answer
    x = 193,099,645.42

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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.