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Finding the Fourth Proportional to 268,487.18, 402,186.80 and 124,187.91

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Solution

The fourth proportional to 268,487.18, 402,186.80 and 124,187.91 is: 186,030.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,487.18 : 402,186.80 = 124,187.91 : x
  2. Step 2: Convert to fraction form
    268,487.18/402,186.80 = 124,187.91/x
  3. Step 3: Cross multiply
    268,487.18x = 402,186.80 × 124,187.91
  4. Step 4: Simplify right side
    268,487.18x = 49,946,737,500.65
  5. Step 5: Solve for x
    x = 49,946,737,500.65/268,487.18
  6. Step 6: Final answer
    x = 186,030.25

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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.