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Finding the Fourth Proportional to 372,045.11, 513,439.80 and 210,903.29

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Solution

The fourth proportional to 372,045.11, 513,439.80 and 210,903.29 is: 291,056.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,045.11 : 513,439.80 = 210,903.29 : x
  2. Step 2: Convert to fraction form
    372,045.11/513,439.80 = 210,903.29/x
  3. Step 3: Cross multiply
    372,045.11x = 513,439.80 × 210,903.29
  4. Step 4: Simplify right side
    372,045.11x = 108,286,143,036.94
  5. Step 5: Solve for x
    x = 108,286,143,036.94/372,045.11
  6. Step 6: Final answer
    x = 291,056.49

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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.