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Finding the Fourth Proportional to 210,431.52, 315,773.05 and 77,325.23

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Solution

The fourth proportional to 210,431.52, 315,773.05 and 77,325.23 is: 116,034.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,431.52 : 315,773.05 = 77,325.23 : x
  2. Step 2: Convert to fraction form
    210,431.52/315,773.05 = 77,325.23/x
  3. Step 3: Cross multiply
    210,431.52x = 315,773.05 × 77,325.23
  4. Step 4: Simplify right side
    210,431.52x = 24,417,224,315.17
  5. Step 5: Solve for x
    x = 24,417,224,315.17/210,431.52
  6. Step 6: Final answer
    x = 116,034.06

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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.