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Finding the Fourth Proportional to 261,458.92, 392,091.10 and 103,634.92

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Solution

The fourth proportional to 261,458.92, 392,091.10 and 103,634.92 is: 155,413.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,458.92 : 392,091.10 = 103,634.92 : x
  2. Step 2: Convert to fraction form
    261,458.92/392,091.10 = 103,634.92/x
  3. Step 3: Cross multiply
    261,458.92x = 392,091.10 × 103,634.92
  4. Step 4: Simplify right side
    261,458.92x = 40,634,329,781.21
  5. Step 5: Solve for x
    x = 40,634,329,781.21/261,458.92
  6. Step 6: Final answer
    x = 155,413.82

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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.