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Finding the Fourth Proportional to 424,039.89, 636,054.54 and 124,509.66

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Solution

The fourth proportional to 424,039.89, 636,054.54 and 124,509.66 is: 186,762.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,039.89 : 636,054.54 = 124,509.66 : x
  2. Step 2: Convert to fraction form
    424,039.89/636,054.54 = 124,509.66/x
  3. Step 3: Cross multiply
    424,039.89x = 636,054.54 × 124,509.66
  4. Step 4: Simplify right side
    424,039.89x = 79,194,934,516.86
  5. Step 5: Solve for x
    x = 79,194,934,516.86/424,039.89
  6. Step 6: Final answer
    x = 186,762.94

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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.