Home / 287,568.30-431,352.45-243,281.55

Finding the Fourth Proportional to 287,568.30, 431,352.45 and 243,281.55

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Solution

The fourth proportional to 287,568.30, 431,352.45 and 243,281.55 is: 364,922.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,568.30 : 431,352.45 = 243,281.55 : x
  2. Step 2: Convert to fraction form
    287,568.30/431,352.45 = 243,281.55/x
  3. Step 3: Cross multiply
    287,568.30x = 431,352.45 × 243,281.55
  4. Step 4: Simplify right side
    287,568.30x = 104,940,092,632.30
  5. Step 5: Solve for x
    x = 104,940,092,632.30/287,568.30
  6. Step 6: Final answer
    x = 364,922.33

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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.