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Finding the Fourth Proportional to 563,610.40, 845,530.80 and 189,671.20

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Solution

The fourth proportional to 563,610.40, 845,530.80 and 189,671.20 is: 284,545.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,610.40 : 845,530.80 = 189,671.20 : x
  2. Step 2: Convert to fraction form
    563,610.40/845,530.80 = 189,671.20/x
  3. Step 3: Cross multiply
    563,610.40x = 845,530.80 × 189,671.20
  4. Step 4: Simplify right side
    563,610.40x = 160,372,841,472.96
  5. Step 5: Solve for x
    x = 160,372,841,472.96/563,610.40
  6. Step 6: Final answer
    x = 284,545.57

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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.