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Finding the Fourth Proportional to 381,030, 571,501.08 and 100,569.12

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Solution

The fourth proportional to 381,030, 571,501.08 and 100,569.12 is: 150,842.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,030 : 571,501.08 = 100,569.12 : x
  2. Step 2: Convert to fraction form
    381,030/571,501.08 = 100,569.12/x
  3. Step 3: Cross multiply
    381,030x = 571,501.08 × 100,569.12
  4. Step 4: Simplify right side
    381,030x = 57,475,360,694.65
  5. Step 5: Solve for x
    x = 57,475,360,694.65/381,030
  6. Step 6: Final answer
    x = 150,842.09

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1.5x scale

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.