Home / 424,218.60-636,192.54-139,856.10

Finding the Fourth Proportional to 424,218.60, 636,192.54 and 139,856.10

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Solution

The fourth proportional to 424,218.60, 636,192.54 and 139,856.10 is: 209,739.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,218.60 : 636,192.54 = 139,856.10 : x
  2. Step 2: Convert to fraction form
    424,218.60/636,192.54 = 139,856.10/x
  3. Step 3: Cross multiply
    424,218.60x = 636,192.54 × 139,856.10
  4. Step 4: Simplify right side
    424,218.60x = 88,975,407,493.49
  5. Step 5: Solve for x
    x = 88,975,407,493.49/424,218.60
  6. Step 6: Final answer
    x = 209,739.52

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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.