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Finding the Fourth Proportional to 662,938.60, 994,407.90 and 242,159.80

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Solution

The fourth proportional to 662,938.60, 994,407.90 and 242,159.80 is: 363,239.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,938.60 : 994,407.90 = 242,159.80 : x
  2. Step 2: Convert to fraction form
    662,938.60/994,407.90 = 242,159.80/x
  3. Step 3: Cross multiply
    662,938.60x = 994,407.90 × 242,159.80
  4. Step 4: Simplify right side
    662,938.60x = 240,805,618,182.42
  5. Step 5: Solve for x
    x = 240,805,618,182.42/662,938.60
  6. Step 6: Final answer
    x = 363,239.70

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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.