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Finding the Fourth Proportional to 315,185.18, 472,714.18 and 115,437.35

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Solution

The fourth proportional to 315,185.18, 472,714.18 and 115,437.35 is: 173,132.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,185.18 : 472,714.18 = 115,437.35 : x
  2. Step 2: Convert to fraction form
    315,185.18/472,714.18 = 115,437.35/x
  3. Step 3: Cross multiply
    315,185.18x = 472,714.18 × 115,437.35
  4. Step 4: Simplify right side
    315,185.18x = 54,568,873,139.82
  5. Step 5: Solve for x
    x = 54,568,873,139.82/315,185.18
  6. Step 6: Final answer
    x = 173,132.74

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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.