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Finding the Fourth Proportional to 341,990.85, 513,012.04 and 102,085.79

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Solution

The fourth proportional to 341,990.85, 513,012.04 and 102,085.79 is: 153,136.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,990.85 : 513,012.04 = 102,085.79 : x
  2. Step 2: Convert to fraction form
    341,990.85/513,012.04 = 102,085.79/x
  3. Step 3: Cross multiply
    341,990.85x = 513,012.04 × 102,085.79
  4. Step 4: Simplify right side
    341,990.85x = 52,371,239,382.91
  5. Step 5: Solve for x
    x = 52,371,239,382.91/341,990.85
  6. Step 6: Final answer
    x = 153,136.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.