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Finding the Fourth Proportional to 243,959.80, 336,871.18 and 153,344.94

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Solution

The fourth proportional to 243,959.80, 336,871.18 and 153,344.94 is: 211,745.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,959.80 : 336,871.18 = 153,344.94 : x
  2. Step 2: Convert to fraction form
    243,959.80/336,871.18 = 153,344.94/x
  3. Step 3: Cross multiply
    243,959.80x = 336,871.18 × 153,344.94
  4. Step 4: Simplify right side
    243,959.80x = 51,657,490,118.10
  5. Step 5: Solve for x
    x = 51,657,490,118.10/243,959.80
  6. Step 6: Final answer
    x = 211,745.92

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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.