Home / 330,562.95-456,021-239,719.70

Finding the Fourth Proportional to 330,562.95, 456,021 and 239,719.70

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Solution

The fourth proportional to 330,562.95, 456,021 and 239,719.70 is: 330,700.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,562.95 : 456,021 = 239,719.70 : x
  2. Step 2: Convert to fraction form
    330,562.95/456,021 = 239,719.70/x
  3. Step 3: Cross multiply
    330,562.95x = 456,021 × 239,719.70
  4. Step 4: Simplify right side
    330,562.95x = 109,317,215,033.60
  5. Step 5: Solve for x
    x = 109,317,215,033.60/330,562.95
  6. Step 6: Final answer
    x = 330,700.14

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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.