Home / 219,031.38-328,547.07-85,974.30

Finding the Fourth Proportional to 219,031.38, 328,547.07 and 85,974.30

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Solution

The fourth proportional to 219,031.38, 328,547.07 and 85,974.30 is: 128,961.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,031.38 : 328,547.07 = 85,974.30 : x
  2. Step 2: Convert to fraction form
    219,031.38/328,547.07 = 85,974.30/x
  3. Step 3: Cross multiply
    219,031.38x = 328,547.07 × 85,974.30
  4. Step 4: Simplify right side
    219,031.38x = 28,246,604,360.30
  5. Step 5: Solve for x
    x = 28,246,604,360.30/219,031.38
  6. Step 6: Final answer
    x = 128,961.45

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Similar ratio
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1.5x scale

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.