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Finding the Fourth Proportional to 571,889.40, 857,574.90 and 216,785.40

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Solution

The fourth proportional to 571,889.40, 857,574.90 and 216,785.40 is: 325,079.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,889.40 : 857,574.90 = 216,785.40 : x
  2. Step 2: Convert to fraction form
    571,889.40/857,574.90 = 216,785.40/x
  3. Step 3: Cross multiply
    571,889.40x = 857,574.90 × 216,785.40
  4. Step 4: Simplify right side
    571,889.40x = 185,909,717,726.46
  5. Step 5: Solve for x
    x = 185,909,717,726.46/571,889.40
  6. Step 6: Final answer
    x = 325,079.85

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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.