Home / 287,641,346.66-396,944,887.13-155,482,344.95

Finding the Fourth Proportional to 287,641,346.66, 396,944,887.13 and 155,482,344.95

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Solution

The fourth proportional to 287,641,346.66, 396,944,887.13 and 155,482,344.95 is: 214,565,543.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,641,346.66 : 396,944,887.13 = 155,482,344.95 : x
  2. Step 2: Convert to fraction form
    287,641,346.66/396,944,887.13 = 155,482,344.95/x
  3. Step 3: Cross multiply
    287,641,346.66x = 396,944,887.13 × 155,482,344.95
  4. Step 4: Simplify right side
    287,641,346.66x = 61,717,921,864,123,336
  5. Step 5: Solve for x
    x = 61,717,921,864,123,336/287,641,346.66
  6. Step 6: Final answer
    x = 214,565,543.45

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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.