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Finding the Fourth Proportional to 478,474.80, 717,688.33 and 178,933.35

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Solution

The fourth proportional to 478,474.80, 717,688.33 and 178,933.35 is: 268,391.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,474.80 : 717,688.33 = 178,933.35 : x
  2. Step 2: Convert to fraction form
    478,474.80/717,688.33 = 178,933.35/x
  3. Step 3: Cross multiply
    478,474.80x = 717,688.33 × 178,933.35
  4. Step 4: Simplify right side
    478,474.80x = 128,418,379,386.80
  5. Step 5: Solve for x
    x = 128,418,379,386.80/478,474.80
  6. Step 6: Final answer
    x = 268,391.11

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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.