Home / 318,849,971.20-478,386,931.20-137,152,844.80

Finding the Fourth Proportional to 318,849,971.20, 478,386,931.20 and 137,152,844.80

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Solution

The fourth proportional to 318,849,971.20, 478,386,931.20 and 137,152,844.80 is: 205,777,432.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,849,971.20 : 478,386,931.20 = 137,152,844.80 : x
  2. Step 2: Convert to fraction form
    318,849,971.20/478,386,931.20 = 137,152,844.80/x
  3. Step 3: Cross multiply
    318,849,971.20x = 478,386,931.20 × 137,152,844.80
  4. Step 4: Simplify right side
    318,849,971.20x = 65,612,128,529,221,880
  5. Step 5: Solve for x
    x = 65,612,128,529,221,880/318,849,971.20
  6. Step 6: Final answer
    x = 205,777,432.82

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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.