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Finding the Fourth Proportional to 221,663.40, 332,495.10 and 155,178.60

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Solution

The fourth proportional to 221,663.40, 332,495.10 and 155,178.60 is: 232,767.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,663.40 : 332,495.10 = 155,178.60 : x
  2. Step 2: Convert to fraction form
    221,663.40/332,495.10 = 155,178.60/x
  3. Step 3: Cross multiply
    221,663.40x = 332,495.10 × 155,178.60
  4. Step 4: Simplify right side
    221,663.40x = 51,596,124,124.86
  5. Step 5: Solve for x
    x = 51,596,124,124.86/221,663.40
  6. Step 6: Final answer
    x = 232,767.90

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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.