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Finding the Fourth Proportional to 225,147.68, 310,677.36 and 129,658.40

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Solution

The fourth proportional to 225,147.68, 310,677.36 and 129,658.40 is: 178,913.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,147.68 : 310,677.36 = 129,658.40 : x
  2. Step 2: Convert to fraction form
    225,147.68/310,677.36 = 129,658.40/x
  3. Step 3: Cross multiply
    225,147.68x = 310,677.36 × 129,658.40
  4. Step 4: Simplify right side
    225,147.68x = 40,281,929,413.82
  5. Step 5: Solve for x
    x = 40,281,929,413.82/225,147.68
  6. Step 6: Final answer
    x = 178,913.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.