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Finding the Fourth Proportional to 254,193.39, 380,688.80 and 220,731.66

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Solution

The fourth proportional to 254,193.39, 380,688.80 and 220,731.66 is: 330,575.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,193.39 : 380,688.80 = 220,731.66 : x
  2. Step 2: Convert to fraction form
    254,193.39/380,688.80 = 220,731.66/x
  3. Step 3: Cross multiply
    254,193.39x = 380,688.80 × 220,731.66
  4. Step 4: Simplify right side
    254,193.39x = 84,030,069,663.75
  5. Step 5: Solve for x
    x = 84,030,069,663.75/254,193.39
  6. Step 6: Final answer
    x = 330,575.35

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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.