Home / 389,013.12-583,618.10-108,530.16

Finding the Fourth Proportional to 389,013.12, 583,618.10 and 108,530.16

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Solution

The fourth proportional to 389,013.12, 583,618.10 and 108,530.16 is: 162,822.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,013.12 : 583,618.10 = 108,530.16 : x
  2. Step 2: Convert to fraction form
    389,013.12/583,618.10 = 108,530.16/x
  3. Step 3: Cross multiply
    389,013.12x = 583,618.10 × 108,530.16
  4. Step 4: Simplify right side
    389,013.12x = 63,340,165,771.90
  5. Step 5: Solve for x
    x = 63,340,165,771.90/389,013.12
  6. Step 6: Final answer
    x = 162,822.70

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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.