Home / 256,815.46-385,194-99,030.70

Finding the Fourth Proportional to 256,815.46, 385,194 and 99,030.70

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Solution

The fourth proportional to 256,815.46, 385,194 and 99,030.70 is: 148,534.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,815.46 : 385,194 = 99,030.70 : x
  2. Step 2: Convert to fraction form
    256,815.46/385,194 = 99,030.70/x
  3. Step 3: Cross multiply
    256,815.46x = 385,194 × 99,030.70
  4. Step 4: Simplify right side
    256,815.46x = 38,146,031,455.80
  5. Step 5: Solve for x
    x = 38,146,031,455.80/256,815.46
  6. Step 6: Final answer
    x = 148,534.79

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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.