Home / 385,198,775.40-577,842,005.16-139,671,050.52

Finding the Fourth Proportional to 385,198,775.40, 577,842,005.16 and 139,671,050.52

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Solution

The fourth proportional to 385,198,775.40, 577,842,005.16 and 139,671,050.52 is: 209,522,472.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,198,775.40 : 577,842,005.16 = 139,671,050.52 : x
  2. Step 2: Convert to fraction form
    385,198,775.40/577,842,005.16 = 139,671,050.52/x
  3. Step 3: Cross multiply
    385,198,775.40x = 577,842,005.16 × 139,671,050.52
  4. Step 4: Simplify right side
    385,198,775.40x = 80,707,799,895,280,464
  5. Step 5: Solve for x
    x = 80,707,799,895,280,464/385,198,775.40
  6. Step 6: Final answer
    x = 209,522,472.68

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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.