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Finding the Fourth Proportional to 426,095, 639,033.16 and 126,506.08

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Solution

The fourth proportional to 426,095, 639,033.16 and 126,506.08 is: 189,726.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,095 : 639,033.16 = 126,506.08 : x
  2. Step 2: Convert to fraction form
    426,095/639,033.16 = 126,506.08/x
  3. Step 3: Cross multiply
    426,095x = 639,033.16 × 126,506.08
  4. Step 4: Simplify right side
    426,095x = 80,841,580,061.61
  5. Step 5: Solve for x
    x = 80,841,580,061.61/426,095
  6. Step 6: Final answer
    x = 189,726.66

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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.