Home / 287,641,355.65-396,944,899.67-155,482,354.29

Finding the Fourth Proportional to 287,641,355.65, 396,944,899.67 and 155,482,354.29

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Solution

The fourth proportional to 287,641,355.65, 396,944,899.67 and 155,482,354.29 is: 214,565,556.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,641,355.65 : 396,944,899.67 = 155,482,354.29 : x
  2. Step 2: Convert to fraction form
    287,641,355.65/396,944,899.67 = 155,482,354.29/x
  3. Step 3: Cross multiply
    287,641,355.65x = 396,944,899.67 × 155,482,354.29
  4. Step 4: Simplify right side
    287,641,355.65x = 61,717,927,522,868,936
  5. Step 5: Solve for x
    x = 61,717,927,522,868,936/287,641,355.65
  6. Step 6: Final answer
    x = 214,565,556.42

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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.