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Finding the Fourth Proportional to 317,436.56, 438,067.91 and 174,209.93

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Solution

The fourth proportional to 317,436.56, 438,067.91 and 174,209.93 is: 240,412.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,436.56 : 438,067.91 = 174,209.93 : x
  2. Step 2: Convert to fraction form
    317,436.56/438,067.91 = 174,209.93/x
  3. Step 3: Cross multiply
    317,436.56x = 438,067.91 × 174,209.93
  4. Step 4: Simplify right side
    317,436.56x = 76,315,779,936.35
  5. Step 5: Solve for x
    x = 76,315,779,936.35/317,436.56
  6. Step 6: Final answer
    x = 240,412.70

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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.