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Finding the Fourth Proportional to 424,178.60, 636,272.30 and 124,664.52

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Solution

The fourth proportional to 424,178.60, 636,272.30 and 124,664.52 is: 186,998.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,178.60 : 636,272.30 = 124,664.52 : x
  2. Step 2: Convert to fraction form
    424,178.60/636,272.30 = 124,664.52/x
  3. Step 3: Cross multiply
    424,178.60x = 636,272.30 × 124,664.52
  4. Step 4: Simplify right side
    424,178.60x = 79,320,580,868.80
  5. Step 5: Solve for x
    x = 79,320,580,868.80/424,178.60
  6. Step 6: Final answer
    x = 186,998.07

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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.