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Finding the Fourth Proportional to 191,472.45, 287,219.48 and 58,357.05

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Solution

The fourth proportional to 191,472.45, 287,219.48 and 58,357.05 is: 87,538.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,472.45 : 287,219.48 = 58,357.05 : x
  2. Step 2: Convert to fraction form
    191,472.45/287,219.48 = 58,357.05/x
  3. Step 3: Cross multiply
    191,472.45x = 287,219.48 × 58,357.05
  4. Step 4: Simplify right side
    191,472.45x = 16,761,281,263.55
  5. Step 5: Solve for x
    x = 16,761,281,263.55/191,472.45
  6. Step 6: Final answer
    x = 87,538.87

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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.