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Finding the Fourth Proportional to 191,421.60, 287,132.40 and 164,849.55

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Solution

The fourth proportional to 191,421.60, 287,132.40 and 164,849.55 is: 247,274.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,421.60 : 287,132.40 = 164,849.55 : x
  2. Step 2: Convert to fraction form
    191,421.60/287,132.40 = 164,849.55/x
  3. Step 3: Cross multiply
    191,421.60x = 287,132.40 × 164,849.55
  4. Step 4: Simplify right side
    191,421.60x = 47,333,646,930.42
  5. Step 5: Solve for x
    x = 47,333,646,930.42/191,421.60
  6. Step 6: Final answer
    x = 247,274.33

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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.