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Finding the Fourth Proportional to 373,382.65, 515,298.68 and 212,288.23

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Solution

The fourth proportional to 373,382.65, 515,298.68 and 212,288.23 is: 292,975.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,382.65 : 515,298.68 = 212,288.23 : x
  2. Step 2: Convert to fraction form
    373,382.65/515,298.68 = 212,288.23/x
  3. Step 3: Cross multiply
    373,382.65x = 515,298.68 × 212,288.23
  4. Step 4: Simplify right side
    373,382.65x = 109,391,844,698.54
  5. Step 5: Solve for x
    x = 109,391,844,698.54/373,382.65
  6. Step 6: Final answer
    x = 292,975.17

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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.