Home / 287,641,359.16-396,944,904.50-155,482,357.79

Finding the Fourth Proportional to 287,641,359.16, 396,944,904.50 and 155,482,357.79

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Solution

The fourth proportional to 287,641,359.16, 396,944,904.50 and 155,482,357.79 is: 214,565,561.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,641,359.16 : 396,944,904.50 = 155,482,357.79 : x
  2. Step 2: Convert to fraction form
    287,641,359.16/396,944,904.50 = 155,482,357.79/x
  3. Step 3: Cross multiply
    287,641,359.16x = 396,944,904.50 × 155,482,357.79
  4. Step 4: Simplify right side
    287,641,359.16x = 61,717,929,663,608,968
  5. Step 5: Solve for x
    x = 61,717,929,663,608,968/287,641,359.16
  6. Step 6: Final answer
    x = 214,565,561.24

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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.