Home / 315,011.20-472,214.40-104,540.80

Finding the Fourth Proportional to 315,011.20, 472,214.40 and 104,540.80

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Solution

The fourth proportional to 315,011.20, 472,214.40 and 104,540.80 is: 156,710.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,011.20 : 472,214.40 = 104,540.80 : x
  2. Step 2: Convert to fraction form
    315,011.20/472,214.40 = 104,540.80/x
  3. Step 3: Cross multiply
    315,011.20x = 472,214.40 × 104,540.80
  4. Step 4: Simplify right side
    315,011.20x = 49,365,671,147.52
  5. Step 5: Solve for x
    x = 49,365,671,147.52/315,011.20
  6. Step 6: Final answer
    x = 156,710.84

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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.