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Finding the Fourth Proportional to 480,652.25, 721,019.28 and 125,665.70

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Solution

The fourth proportional to 480,652.25, 721,019.28 and 125,665.70 is: 188,509.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,652.25 : 721,019.28 = 125,665.70 : x
  2. Step 2: Convert to fraction form
    480,652.25/721,019.28 = 125,665.70/x
  3. Step 3: Cross multiply
    480,652.25x = 721,019.28 × 125,665.70
  4. Step 4: Simplify right side
    480,652.25x = 90,607,388,929.60
  5. Step 5: Solve for x
    x = 90,607,388,929.60/480,652.25
  6. Step 6: Final answer
    x = 188,509.24

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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.