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Finding the Fourth Proportional to 572,005.80, 858,008.70 and 145,540.80

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Solution

The fourth proportional to 572,005.80, 858,008.70 and 145,540.80 is: 218,311.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,005.80 : 858,008.70 = 145,540.80 : x
  2. Step 2: Convert to fraction form
    572,005.80/858,008.70 = 145,540.80/x
  3. Step 3: Cross multiply
    572,005.80x = 858,008.70 × 145,540.80
  4. Step 4: Simplify right side
    572,005.80x = 124,875,272,604.96
  5. Step 5: Solve for x
    x = 124,875,272,604.96/572,005.80
  6. Step 6: Final answer
    x = 218,311.20

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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.