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Finding the Fourth Proportional to 487,232.20, 730,848.30 and 319,270.60

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Solution

The fourth proportional to 487,232.20, 730,848.30 and 319,270.60 is: 478,905.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,232.20 : 730,848.30 = 319,270.60 : x
  2. Step 2: Convert to fraction form
    487,232.20/730,848.30 = 319,270.60/x
  3. Step 3: Cross multiply
    487,232.20x = 730,848.30 × 319,270.60
  4. Step 4: Simplify right side
    487,232.20x = 233,338,375,249.98
  5. Step 5: Solve for x
    x = 233,338,375,249.98/487,232.20
  6. Step 6: Final answer
    x = 478,905.90

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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.