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Finding the Fourth Proportional to 480,385.68, 720,578.52 and 125,396.64

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Solution

The fourth proportional to 480,385.68, 720,578.52 and 125,396.64 is: 188,094.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,385.68 : 720,578.52 = 125,396.64 : x
  2. Step 2: Convert to fraction form
    480,385.68/720,578.52 = 125,396.64/x
  3. Step 3: Cross multiply
    480,385.68x = 720,578.52 × 125,396.64
  4. Step 4: Simplify right side
    480,385.68x = 90,358,125,264.17
  5. Step 5: Solve for x
    x = 90,358,125,264.17/480,385.68
  6. Step 6: Final answer
    x = 188,094.96

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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.