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Finding the Fourth Proportional to 191,218.26, 286,816.46 and 72,901.56

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Solution

The fourth proportional to 191,218.26, 286,816.46 and 72,901.56 is: 109,348.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,218.26 : 286,816.46 = 72,901.56 : x
  2. Step 2: Convert to fraction form
    191,218.26/286,816.46 = 72,901.56/x
  3. Step 3: Cross multiply
    191,218.26x = 286,816.46 × 72,901.56
  4. Step 4: Simplify right side
    191,218.26x = 20,909,367,003.17
  5. Step 5: Solve for x
    x = 20,909,367,003.17/191,218.26
  6. Step 6: Final answer
    x = 109,348.17

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1.5x scale

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.