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Finding the Fourth Proportional to 514,298.42, 771,386.21 and 135,248.69

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Solution

The fourth proportional to 514,298.42, 771,386.21 and 135,248.69 is: 202,856.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,298.42 : 771,386.21 = 135,248.69 : x
  2. Step 2: Convert to fraction form
    514,298.42/771,386.21 = 135,248.69/x
  3. Step 3: Cross multiply
    514,298.42x = 771,386.21 × 135,248.69
  4. Step 4: Simplify right side
    514,298.42x = 104,328,974,386.57
  5. Step 5: Solve for x
    x = 104,328,974,386.57/514,298.42
  6. Step 6: Final answer
    x = 202,856.88

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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.