Home / 318,849,973.20-478,386,934.20-137,152,846.80

Finding the Fourth Proportional to 318,849,973.20, 478,386,934.20 and 137,152,846.80

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Solution

The fourth proportional to 318,849,973.20, 478,386,934.20 and 137,152,846.80 is: 205,777,435.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,849,973.20 : 478,386,934.20 = 137,152,846.80 : x
  2. Step 2: Convert to fraction form
    318,849,973.20/478,386,934.20 = 137,152,846.80/x
  3. Step 3: Cross multiply
    318,849,973.20x = 478,386,934.20 × 137,152,846.80
  4. Step 4: Simplify right side
    318,849,973.20x = 65,612,129,897,454,288
  5. Step 5: Solve for x
    x = 65,612,129,897,454,288/318,849,973.20
  6. Step 6: Final answer
    x = 205,777,435.82

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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.