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Finding the Fourth Proportional to 191,775.60, 287,663.40 and 145,119.60

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Solution

The fourth proportional to 191,775.60, 287,663.40 and 145,119.60 is: 217,679.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,775.60 : 287,663.40 = 145,119.60 : x
  2. Step 2: Convert to fraction form
    191,775.60/287,663.40 = 145,119.60/x
  3. Step 3: Cross multiply
    191,775.60x = 287,663.40 × 145,119.60
  4. Step 4: Simplify right side
    191,775.60x = 41,745,597,542.64
  5. Step 5: Solve for x
    x = 41,745,597,542.64/191,775.60
  6. Step 6: Final answer
    x = 217,679.40

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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.