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Finding the Fourth Proportional to 229,171.20, 316,314.39 and 156,603.47

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Solution

The fourth proportional to 229,171.20, 316,314.39 and 156,603.47 is: 216,152.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,171.20 : 316,314.39 = 156,603.47 : x
  2. Step 2: Convert to fraction form
    229,171.20/316,314.39 = 156,603.47/x
  3. Step 3: Cross multiply
    229,171.20x = 316,314.39 × 156,603.47
  4. Step 4: Simplify right side
    229,171.20x = 49,535,931,084.93
  5. Step 5: Solve for x
    x = 49,535,931,084.93/229,171.20
  6. Step 6: Final answer
    x = 216,152.51

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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.