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Finding the Fourth Proportional to 315,341.29, 472,730.69 and 115,615.13

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Solution

The fourth proportional to 315,341.29, 472,730.69 and 115,615.13 is: 173,319.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,341.29 : 472,730.69 = 115,615.13 : x
  2. Step 2: Convert to fraction form
    315,341.29/472,730.69 = 115,615.13/x
  3. Step 3: Cross multiply
    315,341.29x = 472,730.69 × 115,615.13
  4. Step 4: Simplify right side
    315,341.29x = 54,654,821,650.20
  5. Step 5: Solve for x
    x = 54,654,821,650.20/315,341.29
  6. Step 6: Final answer
    x = 173,319.59

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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.