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Finding the Fourth Proportional to 287,641,348.04, 396,944,889.02 and 155,482,346.32

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Solution

The fourth proportional to 287,641,348.04, 396,944,889.02 and 155,482,346.32 is: 214,565,545.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,641,348.04 : 396,944,889.02 = 155,482,346.32 : x
  2. Step 2: Convert to fraction form
    287,641,348.04/396,944,889.02 = 155,482,346.32/x
  3. Step 3: Cross multiply
    287,641,348.04x = 396,944,889.02 × 155,482,346.32
  4. Step 4: Simplify right side
    287,641,348.04x = 61,717,922,704,561,600
  5. Step 5: Solve for x
    x = 61,717,922,704,561,600/287,641,348.04
  6. Step 6: Final answer
    x = 214,565,545.34

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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.