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Finding the Fourth Proportional to 261,413.60, 392,112.30 and 74,425.10

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Solution

The fourth proportional to 261,413.60, 392,112.30 and 74,425.10 is: 111,635.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,413.60 : 392,112.30 = 74,425.10 : x
  2. Step 2: Convert to fraction form
    261,413.60/392,112.30 = 74,425.10/x
  3. Step 3: Cross multiply
    261,413.60x = 392,112.30 × 74,425.10
  4. Step 4: Simplify right side
    261,413.60x = 29,182,997,138.73
  5. Step 5: Solve for x
    x = 29,182,997,138.73/261,413.60
  6. Step 6: Final answer
    x = 111,635.34

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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.