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Finding the Fourth Proportional to 243,491.80, 336,012.23 and 136,062.72

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Solution

The fourth proportional to 243,491.80, 336,012.23 and 136,062.72 is: 187,762.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,491.80 : 336,012.23 = 136,062.72 : x
  2. Step 2: Convert to fraction form
    243,491.80/336,012.23 = 136,062.72/x
  3. Step 3: Cross multiply
    243,491.80x = 336,012.23 × 136,062.72
  4. Step 4: Simplify right side
    243,491.80x = 45,718,737,967.07
  5. Step 5: Solve for x
    x = 45,718,737,967.07/243,491.80
  6. Step 6: Final answer
    x = 187,762.95

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1.5x scale

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.