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Finding the Fourth Proportional to 571,470.40, 857,570.10 and 272,288.80

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Solution

The fourth proportional to 571,470.40, 857,570.10 and 272,288.80 is: 408,606.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,470.40 : 857,570.10 = 272,288.80 : x
  2. Step 2: Convert to fraction form
    571,470.40/857,570.10 = 272,288.80/x
  3. Step 3: Cross multiply
    571,470.40x = 857,570.10 × 272,288.80
  4. Step 4: Simplify right side
    571,470.40x = 233,506,733,444.88
  5. Step 5: Solve for x
    x = 233,506,733,444.88/571,470.40
  6. Step 6: Final answer
    x = 408,606.87

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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.