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Finding the Fourth Proportional to 478,306.37, 717,415.80 and 145,882.37

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Solution

The fourth proportional to 478,306.37, 717,415.80 and 145,882.37 is: 218,810.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,306.37 : 717,415.80 = 145,882.37 : x
  2. Step 2: Convert to fraction form
    478,306.37/717,415.80 = 145,882.37/x
  3. Step 3: Cross multiply
    478,306.37x = 717,415.80 × 145,882.37
  4. Step 4: Simplify right side
    478,306.37x = 104,658,313,592.37
  5. Step 5: Solve for x
    x = 104,658,313,592.37/478,306.37
  6. Step 6: Final answer
    x = 218,810.20

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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.