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Finding the Fourth Proportional to 478,423.68, 717,386.33 and 225,636.29

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Solution

The fourth proportional to 478,423.68, 717,386.33 and 225,636.29 is: 338,336.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,423.68 : 717,386.33 = 225,636.29 : x
  2. Step 2: Convert to fraction form
    478,423.68/717,386.33 = 225,636.29/x
  3. Step 3: Cross multiply
    478,423.68x = 717,386.33 × 225,636.29
  4. Step 4: Simplify right side
    478,423.68x = 161,868,388,768.54
  5. Step 5: Solve for x
    x = 161,868,388,768.54/478,423.68
  6. Step 6: Final answer
    x = 338,336.91

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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.