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Finding the Fourth Proportional to 221,060.54, 305,202.90 and 156,666.34

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Solution

The fourth proportional to 221,060.54, 305,202.90 and 156,666.34 is: 216,298.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,060.54 : 305,202.90 = 156,666.34 : x
  2. Step 2: Convert to fraction form
    221,060.54/305,202.90 = 156,666.34/x
  3. Step 3: Cross multiply
    221,060.54x = 305,202.90 × 156,666.34
  4. Step 4: Simplify right side
    221,060.54x = 47,815,021,300.39
  5. Step 5: Solve for x
    x = 47,815,021,300.39/221,060.54
  6. Step 6: Final answer
    x = 216,298.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.