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Finding the Fourth Proportional to 571,987.34, 857,986.02 and 145,523.55

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Solution

The fourth proportional to 571,987.34, 857,986.02 and 145,523.55 is: 218,286.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,987.34 : 857,986.02 = 145,523.55 : x
  2. Step 2: Convert to fraction form
    571,987.34/857,986.02 = 145,523.55/x
  3. Step 3: Cross multiply
    571,987.34x = 857,986.02 × 145,523.55
  4. Step 4: Simplify right side
    571,987.34x = 124,857,171,480.77
  5. Step 5: Solve for x
    x = 124,857,171,480.77/571,987.34
  6. Step 6: Final answer
    x = 218,286.60

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Double scale
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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.