Home / 330,123.72-455,105.28-234,595.56

Finding the Fourth Proportional to 330,123.72, 455,105.28 and 234,595.56

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Solution

The fourth proportional to 330,123.72, 455,105.28 and 234,595.56 is: 323,411.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,123.72 : 455,105.28 = 234,595.56 : x
  2. Step 2: Convert to fraction form
    330,123.72/455,105.28 = 234,595.56/x
  3. Step 3: Cross multiply
    330,123.72x = 455,105.28 × 234,595.56
  4. Step 4: Simplify right side
    330,123.72x = 106,765,678,020.56
  5. Step 5: Solve for x
    x = 106,765,678,020.56/330,123.72
  6. Step 6: Final answer
    x = 323,411.11

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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.