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Finding the Fourth Proportional to 480,663.90, 720,933.21 and 125,705.30

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Solution

The fourth proportional to 480,663.90, 720,933.21 and 125,705.30 is: 188,541.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,663.90 : 720,933.21 = 125,705.30 : x
  2. Step 2: Convert to fraction form
    480,663.90/720,933.21 = 125,705.30/x
  3. Step 3: Cross multiply
    480,663.90x = 720,933.21 × 125,705.30
  4. Step 4: Simplify right side
    480,663.90x = 90,625,121,838.35
  5. Step 5: Solve for x
    x = 90,625,121,838.35/480,663.90
  6. Step 6: Final answer
    x = 188,541.56

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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.