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Finding the Fourth Proportional to 243,647.55, 336,264.51 and 136,223.94

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Solution

The fourth proportional to 243,647.55, 336,264.51 and 136,223.94 is: 188,006.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,647.55 : 336,264.51 = 136,223.94 : x
  2. Step 2: Convert to fraction form
    243,647.55/336,264.51 = 136,223.94/x
  3. Step 3: Cross multiply
    243,647.55x = 336,264.51 × 136,223.94
  4. Step 4: Simplify right side
    243,647.55x = 45,807,276,434.37
  5. Step 5: Solve for x
    x = 45,807,276,434.37/243,647.55
  6. Step 6: Final answer
    x = 188,006.31

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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.