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Finding the Fourth Proportional to 317,886.48, 438,876 and 210,548.52

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Solution

The fourth proportional to 317,886.48, 438,876 and 210,548.52 is: 290,684.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,886.48 : 438,876 = 210,548.52 : x
  2. Step 2: Convert to fraction form
    317,886.48/438,876 = 210,548.52/x
  3. Step 3: Cross multiply
    317,886.48x = 438,876 × 210,548.52
  4. Step 4: Simplify right side
    317,886.48x = 92,404,692,263.52
  5. Step 5: Solve for x
    x = 92,404,692,263.52/317,886.48
  6. Step 6: Final answer
    x = 290,684.56

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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.