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Finding the Fourth Proportional to 261,701.29, 392,554.34 and 72,164.93

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Solution

The fourth proportional to 261,701.29, 392,554.34 and 72,164.93 is: 108,248.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,701.29 : 392,554.34 = 72,164.93 : x
  2. Step 2: Convert to fraction form
    261,701.29/392,554.34 = 72,164.93/x
  3. Step 3: Cross multiply
    261,701.29x = 392,554.34 × 72,164.93
  4. Step 4: Simplify right side
    261,701.29x = 28,328,656,106.47
  5. Step 5: Solve for x
    x = 28,328,656,106.47/261,701.29
  6. Step 6: Final answer
    x = 108,248.06

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1.5x scale

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.