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Finding the Fourth Proportional to 402,655.20, 604,055.70 and 202,471.80

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Solution

The fourth proportional to 402,655.20, 604,055.70 and 202,471.80 is: 303,744.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,655.20 : 604,055.70 = 202,471.80 : x
  2. Step 2: Convert to fraction form
    402,655.20/604,055.70 = 202,471.80/x
  3. Step 3: Cross multiply
    402,655.20x = 604,055.70 × 202,471.80
  4. Step 4: Simplify right side
    402,655.20x = 122,304,244,879.26
  5. Step 5: Solve for x
    x = 122,304,244,879.26/402,655.20
  6. Step 6: Final answer
    x = 303,744.36

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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.