Home / 287,864.10-432,314.55-278,532.90

Finding the Fourth Proportional to 287,864.10, 432,314.55 and 278,532.90

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Solution

The fourth proportional to 287,864.10, 432,314.55 and 278,532.90 is: 418,300.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,864.10 : 432,314.55 = 278,532.90 : x
  2. Step 2: Convert to fraction form
    287,864.10/432,314.55 = 278,532.90/x
  3. Step 3: Cross multiply
    287,864.10x = 432,314.55 × 278,532.90
  4. Step 4: Simplify right side
    287,864.10x = 120,413,825,323.70
  5. Step 5: Solve for x
    x = 120,413,825,323.70/287,864.10
  6. Step 6: Final answer
    x = 418,300.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.