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Finding the Fourth Proportional to 570,387.04, 855,578.23 and 143,923.86

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Solution

The fourth proportional to 570,387.04, 855,578.23 and 143,923.86 is: 215,885.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,387.04 : 855,578.23 = 143,923.86 : x
  2. Step 2: Convert to fraction form
    570,387.04/855,578.23 = 143,923.86/x
  3. Step 3: Cross multiply
    570,387.04x = 855,578.23 × 143,923.86
  4. Step 4: Simplify right side
    570,387.04x = 123,138,121,033.76
  5. Step 5: Solve for x
    x = 123,138,121,033.76/570,387.04
  6. Step 6: Final answer
    x = 215,885.20

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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.