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Finding the Fourth Proportional to 379,396.04, 523,810.62 and 243,488.57

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Solution

The fourth proportional to 379,396.04, 523,810.62 and 243,488.57 is: 336,170.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,396.04 : 523,810.62 = 243,488.57 : x
  2. Step 2: Convert to fraction form
    379,396.04/523,810.62 = 243,488.57/x
  3. Step 3: Cross multiply
    379,396.04x = 523,810.62 × 243,488.57
  4. Step 4: Simplify right side
    379,396.04x = 127,541,896,195.56
  5. Step 5: Solve for x
    x = 127,541,896,195.56/379,396.04
  6. Step 6: Final answer
    x = 336,170.87

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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.