Home / 287,641,349.67-396,944,891.27-155,482,347.95

Finding the Fourth Proportional to 287,641,349.67, 396,944,891.27 and 155,482,347.95

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Solution

The fourth proportional to 287,641,349.67, 396,944,891.27 and 155,482,347.95 is: 214,565,547.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,641,349.67 : 396,944,891.27 = 155,482,347.95 : x
  2. Step 2: Convert to fraction form
    287,641,349.67/396,944,891.27 = 155,482,347.95/x
  3. Step 3: Cross multiply
    287,641,349.67x = 396,944,891.27 × 155,482,347.95
  4. Step 4: Simplify right side
    287,641,349.67x = 61,717,923,698,654,920
  5. Step 5: Solve for x
    x = 61,717,923,698,654,920/287,641,349.67
  6. Step 6: Final answer
    x = 214,565,547.58

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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.