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Finding the Fourth Proportional to 570,367.91, 855,549.54 and 143,904.74

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Solution

The fourth proportional to 570,367.91, 855,549.54 and 143,904.74 is: 215,856.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,367.91 : 855,549.54 = 143,904.74 : x
  2. Step 2: Convert to fraction form
    570,367.91/855,549.54 = 143,904.74/x
  3. Step 3: Cross multiply
    570,367.91x = 855,549.54 × 143,904.74
  4. Step 4: Simplify right side
    570,367.91x = 123,117,629,833.07
  5. Step 5: Solve for x
    x = 123,117,629,833.07/570,367.91
  6. Step 6: Final answer
    x = 215,856.51

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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.