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Finding the Fourth Proportional to 478,641.17, 718,047.15 and 158,812.23

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Solution

The fourth proportional to 478,641.17, 718,047.15 and 158,812.23 is: 238,246.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,641.17 : 718,047.15 = 158,812.23 : x
  2. Step 2: Convert to fraction form
    478,641.17/718,047.15 = 158,812.23/x
  3. Step 3: Cross multiply
    478,641.17x = 718,047.15 × 158,812.23
  4. Step 4: Simplify right side
    478,641.17x = 114,034,668,342.58
  5. Step 5: Solve for x
    x = 114,034,668,342.58/478,641.17
  6. Step 6: Final answer
    x = 238,246.68

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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.