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Finding the Fourth Proportional to 261,065.30, 391,598.25 and 71,527.28

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Solution

The fourth proportional to 261,065.30, 391,598.25 and 71,527.28 is: 107,291.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,065.30 : 391,598.25 = 71,527.28 : x
  2. Step 2: Convert to fraction form
    261,065.30/391,598.25 = 71,527.28/x
  3. Step 3: Cross multiply
    261,065.30x = 391,598.25 × 71,527.28
  4. Step 4: Simplify right side
    261,065.30x = 28,009,955,985.50
  5. Step 5: Solve for x
    x = 28,009,955,985.50/261,065.30
  6. Step 6: Final answer
    x = 107,291.00

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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.