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Finding the Fourth Proportional to 315,213.47, 435,006.80 and 179,259.83

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Solution

The fourth proportional to 315,213.47, 435,006.80 and 179,259.83 is: 247,385.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,213.47 : 435,006.80 = 179,259.83 : x
  2. Step 2: Convert to fraction form
    315,213.47/435,006.80 = 179,259.83/x
  3. Step 3: Cross multiply
    315,213.47x = 435,006.80 × 179,259.83
  4. Step 4: Simplify right side
    315,213.47x = 77,979,245,016.84
  5. Step 5: Solve for x
    x = 77,979,245,016.84/315,213.47
  6. Step 6: Final answer
    x = 247,385.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.