Home / 810,165.16-1,215,248.14-211,124.80

Finding the Fourth Proportional to 810,165.16, 1,215,248.14 and 211,124.80

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Solution

The fourth proportional to 810,165.16, 1,215,248.14 and 211,124.80 is: 316,687.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,165.16 : 1,215,248.14 = 211,124.80 : x
  2. Step 2: Convert to fraction form
    810,165.16/1,215,248.14 = 211,124.80/x
  3. Step 3: Cross multiply
    810,165.16x = 1,215,248.14 × 211,124.80
  4. Step 4: Simplify right side
    810,165.16x = 256,569,017,733.66
  5. Step 5: Solve for x
    x = 256,569,017,733.66/810,165.16
  6. Step 6: Final answer
    x = 316,687.30

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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.