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Finding the Fourth Proportional to 191,221.01, 286,820.58 and 72,904.31

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Solution

The fourth proportional to 191,221.01, 286,820.58 and 72,904.31 is: 109,352.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,221.01 : 286,820.58 = 72,904.31 : x
  2. Step 2: Convert to fraction form
    191,221.01/286,820.58 = 72,904.31/x
  3. Step 3: Cross multiply
    191,221.01x = 286,820.58 × 72,904.31
  4. Step 4: Simplify right side
    191,221.01x = 20,910,456,478.70
  5. Step 5: Solve for x
    x = 20,910,456,478.70/191,221.01
  6. Step 6: Final answer
    x = 109,352.30

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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.