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Finding the Fourth Proportional to 381,010.90, 571,547.52 and 191,373.76

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Solution

The fourth proportional to 381,010.90, 571,547.52 and 191,373.76 is: 287,076.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,010.90 : 571,547.52 = 191,373.76 : x
  2. Step 2: Convert to fraction form
    381,010.90/571,547.52 = 191,373.76/x
  3. Step 3: Cross multiply
    381,010.90x = 571,547.52 × 191,373.76
  4. Step 4: Simplify right side
    381,010.90x = 109,379,197,921.08
  5. Step 5: Solve for x
    x = 109,379,197,921.08/381,010.90
  6. Step 6: Final answer
    x = 287,076.30

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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.