Home / 287,296.13-396,460.54-156,470.83

Finding the Fourth Proportional to 287,296.13, 396,460.54 and 156,470.83

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Solution

The fourth proportional to 287,296.13, 396,460.54 and 156,470.83 is: 215,925.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,296.13 : 396,460.54 = 156,470.83 : x
  2. Step 2: Convert to fraction form
    287,296.13/396,460.54 = 156,470.83/x
  3. Step 3: Cross multiply
    287,296.13x = 396,460.54 × 156,470.83
  4. Step 4: Simplify right side
    287,296.13x = 62,034,508,733.02
  5. Step 5: Solve for x
    x = 62,034,508,733.02/287,296.13
  6. Step 6: Final answer
    x = 215,925.32

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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.