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Finding the Fourth Proportional to 243,491.16, 336,030.78 and 136,063.80

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Solution

The fourth proportional to 243,491.16, 336,030.78 and 136,063.80 is: 187,775.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,491.16 : 336,030.78 = 136,063.80 : x
  2. Step 2: Convert to fraction form
    243,491.16/336,030.78 = 136,063.80/x
  3. Step 3: Cross multiply
    243,491.16x = 336,030.78 × 136,063.80
  4. Step 4: Simplify right side
    243,491.16x = 45,721,624,843.76
  5. Step 5: Solve for x
    x = 45,721,624,843.76/243,491.16
  6. Step 6: Final answer
    x = 187,775.30

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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.