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Finding the Fourth Proportional to 315,338.66, 472,726.76 and 115,612.51

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Solution

The fourth proportional to 315,338.66, 472,726.76 and 115,612.51 is: 173,315.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,338.66 : 472,726.76 = 115,612.51 : x
  2. Step 2: Convert to fraction form
    315,338.66/472,726.76 = 115,612.51/x
  3. Step 3: Cross multiply
    315,338.66x = 472,726.76 × 115,612.51
  4. Step 4: Simplify right side
    315,338.66x = 54,653,125,507.89
  5. Step 5: Solve for x
    x = 54,653,125,507.89/315,338.66
  6. Step 6: Final answer
    x = 173,315.65

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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.