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Finding the Fourth Proportional to 246,602.72, 340,312.92 and 139,177.28

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Solution

The fourth proportional to 246,602.72, 340,312.92 and 139,177.28 is: 192,065.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,602.72 : 340,312.92 = 139,177.28 : x
  2. Step 2: Convert to fraction form
    246,602.72/340,312.92 = 139,177.28/x
  3. Step 3: Cross multiply
    246,602.72x = 340,312.92 × 139,177.28
  4. Step 4: Simplify right side
    246,602.72x = 47,363,826,554.46
  5. Step 5: Solve for x
    x = 47,363,826,554.46/246,602.72
  6. Step 6: Final answer
    x = 192,065.30

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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.