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Finding the Fourth Proportional to 381,407.58, 571,888.89 and 115,088.22

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Solution

The fourth proportional to 381,407.58, 571,888.89 and 115,088.22 is: 172,565.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,407.58 : 571,888.89 = 115,088.22 : x
  2. Step 2: Convert to fraction form
    381,407.58/571,888.89 = 115,088.22/x
  3. Step 3: Cross multiply
    381,407.58x = 571,888.89 × 115,088.22
  4. Step 4: Simplify right side
    381,407.58x = 65,817,674,387.88
  5. Step 5: Solve for x
    x = 65,817,674,387.88/381,407.58
  6. Step 6: Final answer
    x = 172,565.20

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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.