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Finding the Fourth Proportional to 402,927.20, 604,390.80 and 242,568.80

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Solution

The fourth proportional to 402,927.20, 604,390.80 and 242,568.80 is: 363,853.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,927.20 : 604,390.80 = 242,568.80 : x
  2. Step 2: Convert to fraction form
    402,927.20/604,390.80 = 242,568.80/x
  3. Step 3: Cross multiply
    402,927.20x = 604,390.80 × 242,568.80
  4. Step 4: Simplify right side
    402,927.20x = 146,606,351,087.04
  5. Step 5: Solve for x
    x = 146,606,351,087.04/402,927.20
  6. Step 6: Final answer
    x = 363,853.20

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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.