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Finding the Fourth Proportional to 515,234.70, 772,885.13 and 136,145.74

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Solution

The fourth proportional to 515,234.70, 772,885.13 and 136,145.74 is: 204,227.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,234.70 : 772,885.13 = 136,145.74 : x
  2. Step 2: Convert to fraction form
    515,234.70/772,885.13 = 136,145.74/x
  3. Step 3: Cross multiply
    515,234.70x = 772,885.13 × 136,145.74
  4. Step 4: Simplify right side
    515,234.70x = 105,225,017,278.12
  5. Step 5: Solve for x
    x = 105,225,017,278.12/515,234.70
  6. Step 6: Final answer
    x = 204,227.35

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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.