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Finding the Fourth Proportional to 314,870.62, 472,339.23 and 115,208.86

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Solution

The fourth proportional to 314,870.62, 472,339.23 and 115,208.86 is: 172,825.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,870.62 : 472,339.23 = 115,208.86 : x
  2. Step 2: Convert to fraction form
    314,870.62/472,339.23 = 115,208.86/x
  3. Step 3: Cross multiply
    314,870.62x = 472,339.23 × 115,208.86
  4. Step 4: Simplify right side
    314,870.62x = 54,417,664,221.58
  5. Step 5: Solve for x
    x = 54,417,664,221.58/314,870.62
  6. Step 6: Final answer
    x = 172,825.47

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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.