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Finding the Fourth Proportional to 373,381.65, 515,297.30 and 212,287.23

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Solution

The fourth proportional to 373,381.65, 515,297.30 and 212,287.23 is: 292,973.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,381.65 : 515,297.30 = 212,287.23 : x
  2. Step 2: Convert to fraction form
    373,381.65/515,297.30 = 212,287.23/x
  3. Step 3: Cross multiply
    373,381.65x = 515,297.30 × 212,287.23
  4. Step 4: Simplify right side
    373,381.65x = 109,391,035,382.04
  5. Step 5: Solve for x
    x = 109,391,035,382.04/373,381.65
  6. Step 6: Final answer
    x = 292,973.79

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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.