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Finding the Fourth Proportional to 293,142.60, 439,859.70 and 115,655.40

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Solution

The fourth proportional to 293,142.60, 439,859.70 and 115,655.40 is: 173,540.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,142.60 : 439,859.70 = 115,655.40 : x
  2. Step 2: Convert to fraction form
    293,142.60/439,859.70 = 115,655.40/x
  3. Step 3: Cross multiply
    293,142.60x = 439,859.70 × 115,655.40
  4. Step 4: Simplify right side
    293,142.60x = 50,872,149,547.38
  5. Step 5: Solve for x
    x = 50,872,149,547.38/293,142.60
  6. Step 6: Final answer
    x = 173,540.62

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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.