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Finding the Fourth Proportional to 261,651.90, 392,477.85 and 156,675.90

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Solution

The fourth proportional to 261,651.90, 392,477.85 and 156,675.90 is: 235,013.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,651.90 : 392,477.85 = 156,675.90 : x
  2. Step 2: Convert to fraction form
    261,651.90/392,477.85 = 156,675.90/x
  3. Step 3: Cross multiply
    261,651.90x = 392,477.85 × 156,675.90
  4. Step 4: Simplify right side
    261,651.90x = 61,491,820,378.82
  5. Step 5: Solve for x
    x = 61,491,820,378.82/261,651.90
  6. Step 6: Final answer
    x = 235,013.85

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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.