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Finding the Fourth Proportional to 261,523.40, 392,285.10 and 74,510.60

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Solution

The fourth proportional to 261,523.40, 392,285.10 and 74,510.60 is: 111,765.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,523.40 : 392,285.10 = 74,510.60 : x
  2. Step 2: Convert to fraction form
    261,523.40/392,285.10 = 74,510.60/x
  3. Step 3: Cross multiply
    261,523.40x = 392,285.10 × 74,510.60
  4. Step 4: Simplify right side
    261,523.40x = 29,229,398,172.06
  5. Step 5: Solve for x
    x = 29,229,398,172.06/261,523.40
  6. Step 6: Final answer
    x = 111,765.90

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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.