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Finding the Fourth Proportional to 480,561.20, 720,851.40 and 125,553.20

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Solution

The fourth proportional to 480,561.20, 720,851.40 and 125,553.20 is: 188,332.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,561.20 : 720,851.40 = 125,553.20 : x
  2. Step 2: Convert to fraction form
    480,561.20/720,851.40 = 125,553.20/x
  3. Step 3: Cross multiply
    480,561.20x = 720,851.40 × 125,553.20
  4. Step 4: Simplify right side
    480,561.20x = 90,505,199,994.48
  5. Step 5: Solve for x
    x = 90,505,199,994.48/480,561.20
  6. Step 6: Final answer
    x = 188,332.31

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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.