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Finding the Fourth Proportional to 342,321.10, 472,389.22 and 187,269.86

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Solution

The fourth proportional to 342,321.10, 472,389.22 and 187,269.86 is: 258,424.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,321.10 : 472,389.22 = 187,269.86 : x
  2. Step 2: Convert to fraction form
    342,321.10/472,389.22 = 187,269.86/x
  3. Step 3: Cross multiply
    342,321.10x = 472,389.22 × 187,269.86
  4. Step 4: Simplify right side
    342,321.10x = 88,464,263,094.91
  5. Step 5: Solve for x
    x = 88,464,263,094.91/342,321.10
  6. Step 6: Final answer
    x = 258,424.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.