Home / 389,071.28-583,612.68-108,590

Finding the Fourth Proportional to 389,071.28, 583,612.68 and 108,590

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Solution

The fourth proportional to 389,071.28, 583,612.68 and 108,590 is: 162,886.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,071.28 : 583,612.68 = 108,590 : x
  2. Step 2: Convert to fraction form
    389,071.28/583,612.68 = 108,590/x
  3. Step 3: Cross multiply
    389,071.28x = 583,612.68 × 108,590
  4. Step 4: Simplify right side
    389,071.28x = 63,374,500,921.20
  5. Step 5: Solve for x
    x = 63,374,500,921.20/389,071.28
  6. Step 6: Final answer
    x = 162,886.61

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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.