Home / 206,428.79-309,643.66-56,671.13

Finding the Fourth Proportional to 206,428.79, 309,643.66 and 56,671.13

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Solution

The fourth proportional to 206,428.79, 309,643.66 and 56,671.13 is: 85,006.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,428.79 : 309,643.66 = 56,671.13 : x
  2. Step 2: Convert to fraction form
    206,428.79/309,643.66 = 56,671.13/x
  3. Step 3: Cross multiply
    206,428.79x = 309,643.66 × 56,671.13
  4. Step 4: Simplify right side
    206,428.79x = 17,547,856,954.48
  5. Step 5: Solve for x
    x = 17,547,856,954.48/206,428.79
  6. Step 6: Final answer
    x = 85,006.83

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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.