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Finding the Fourth Proportional to 478,685.28, 718,028.88 and 179,153.76

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Solution

The fourth proportional to 478,685.28, 718,028.88 and 179,153.76 is: 268,731.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,685.28 : 718,028.88 = 179,153.76 : x
  2. Step 2: Convert to fraction form
    478,685.28/718,028.88 = 179,153.76/x
  3. Step 3: Cross multiply
    478,685.28x = 718,028.88 × 179,153.76
  4. Step 4: Simplify right side
    478,685.28x = 128,637,573,640.59
  5. Step 5: Solve for x
    x = 128,637,573,640.59/478,685.28
  6. Step 6: Final answer
    x = 268,731.00

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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.