Home / 261,319.20-392,108.40-149,085.60

Finding the Fourth Proportional to 261,319.20, 392,108.40 and 149,085.60

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Solution

The fourth proportional to 261,319.20, 392,108.40 and 149,085.60 is: 223,702.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,319.20 : 392,108.40 = 149,085.60 : x
  2. Step 2: Convert to fraction form
    261,319.20/392,108.40 = 149,085.60/x
  3. Step 3: Cross multiply
    261,319.20x = 392,108.40 × 149,085.60
  4. Step 4: Simplify right side
    261,319.20x = 58,457,716,079.04
  5. Step 5: Solve for x
    x = 58,457,716,079.04/261,319.20
  6. Step 6: Final answer
    x = 223,702.34

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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.