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Finding the Fourth Proportional to 371,391.66, 512,522.64 and 218,436.30

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Solution

The fourth proportional to 371,391.66, 512,522.64 and 218,436.30 is: 301,443.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,391.66 : 512,522.64 = 218,436.30 : x
  2. Step 2: Convert to fraction form
    371,391.66/512,522.64 = 218,436.30/x
  3. Step 3: Cross multiply
    371,391.66x = 512,522.64 × 218,436.30
  4. Step 4: Simplify right side
    371,391.66x = 111,953,549,147.83
  5. Step 5: Solve for x
    x = 111,953,549,147.83/371,391.66
  6. Step 6: Final answer
    x = 301,443.36

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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.