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Finding the Fourth Proportional to 478,686.28, 718,030.38 and 179,154.76

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Solution

The fourth proportional to 478,686.28, 718,030.38 and 179,154.76 is: 268,732.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,686.28 : 718,030.38 = 179,154.76 : x
  2. Step 2: Convert to fraction form
    478,686.28/718,030.38 = 179,154.76/x
  3. Step 3: Cross multiply
    478,686.28x = 718,030.38 × 179,154.76
  4. Step 4: Simplify right side
    478,686.28x = 128,638,560,401.61
  5. Step 5: Solve for x
    x = 128,638,560,401.61/478,686.28
  6. Step 6: Final answer
    x = 268,732.50

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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.