Home / 261,373,670.20-392,060,505.30-257,342,591.80

Finding the Fourth Proportional to 261,373,670.20, 392,060,505.30 and 257,342,591.80

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Solution

The fourth proportional to 261,373,670.20, 392,060,505.30 and 257,342,591.80 is: 386,013,887.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,373,670.20 : 392,060,505.30 = 257,342,591.80 : x
  2. Step 2: Convert to fraction form
    261,373,670.20/392,060,505.30 = 257,342,591.80/x
  3. Step 3: Cross multiply
    261,373,670.20x = 392,060,505.30 × 257,342,591.80
  4. Step 4: Simplify right side
    261,373,670.20x = 100,893,866,576,319,648
  5. Step 5: Solve for x
    x = 100,893,866,576,319,648/261,373,670.20
  6. Step 6: Final answer
    x = 386,013,887.70

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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.