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Finding the Fourth Proportional to 315,030.90, 472,611.15 and 104,819.70

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Solution

The fourth proportional to 315,030.90, 472,611.15 and 104,819.70 is: 157,251.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,030.90 : 472,611.15 = 104,819.70 : x
  2. Step 2: Convert to fraction form
    315,030.90/472,611.15 = 104,819.70/x
  3. Step 3: Cross multiply
    315,030.90x = 472,611.15 × 104,819.70
  4. Step 4: Simplify right side
    315,030.90x = 49,538,958,959.66
  5. Step 5: Solve for x
    x = 49,538,958,959.66/315,030.90
  6. Step 6: Final answer
    x = 157,251.11

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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.