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Finding the Fourth Proportional to 478,517.10, 717,886.70 and 162,976.74

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Solution

The fourth proportional to 478,517.10, 717,886.70 and 162,976.74 is: 244,502.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,517.10 : 717,886.70 = 162,976.74 : x
  2. Step 2: Convert to fraction form
    478,517.10/717,886.70 = 162,976.74/x
  3. Step 3: Cross multiply
    478,517.10x = 717,886.70 × 162,976.74
  4. Step 4: Simplify right side
    478,517.10x = 116,998,834,055.36
  5. Step 5: Solve for x
    x = 116,998,834,055.36/478,517.10
  6. Step 6: Final answer
    x = 244,502.93

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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.