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Finding the Fourth Proportional to 371,934.72, 513,253.36 and 210,780.32

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Solution

The fourth proportional to 371,934.72, 513,253.36 and 210,780.32 is: 290,867.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,934.72 : 513,253.36 = 210,780.32 : x
  2. Step 2: Convert to fraction form
    371,934.72/513,253.36 = 210,780.32/x
  3. Step 3: Cross multiply
    371,934.72x = 513,253.36 × 210,780.32
  4. Step 4: Simplify right side
    371,934.72x = 108,183,707,461.88
  5. Step 5: Solve for x
    x = 108,183,707,461.88/371,934.72
  6. Step 6: Final answer
    x = 290,867.46

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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.