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Finding the Fourth Proportional to 345,672.16, 477,116.40 and 225,113.92

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Solution

The fourth proportional to 345,672.16, 477,116.40 and 225,113.92 is: 310,715.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,672.16 : 477,116.40 = 225,113.92 : x
  2. Step 2: Convert to fraction form
    345,672.16/477,116.40 = 225,113.92/x
  3. Step 3: Cross multiply
    345,672.16x = 477,116.40 × 225,113.92
  4. Step 4: Simplify right side
    345,672.16x = 107,405,543,100.29
  5. Step 5: Solve for x
    x = 107,405,543,100.29/345,672.16
  6. Step 6: Final answer
    x = 310,715.05

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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.