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Finding the Fourth Proportional to 292,281.20, 438,178.80 and 123,930.80

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Solution

The fourth proportional to 292,281.20, 438,178.80 and 123,930.80 is: 185,793.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,281.20 : 438,178.80 = 123,930.80 : x
  2. Step 2: Convert to fraction form
    292,281.20/438,178.80 = 123,930.80/x
  3. Step 3: Cross multiply
    292,281.20x = 438,178.80 × 123,930.80
  4. Step 4: Simplify right side
    292,281.20x = 54,303,849,227.04
  5. Step 5: Solve for x
    x = 54,303,849,227.04/292,281.20
  6. Step 6: Final answer
    x = 185,793.17

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1.5x scale

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.