Home / 317,529.77-438,187.35-172,335.80

Finding the Fourth Proportional to 317,529.77, 438,187.35 and 172,335.80

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Solution

The fourth proportional to 317,529.77, 438,187.35 and 172,335.80 is: 237,821.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,529.77 : 438,187.35 = 172,335.80 : x
  2. Step 2: Convert to fraction form
    317,529.77/438,187.35 = 172,335.80/x
  3. Step 3: Cross multiply
    317,529.77x = 438,187.35 × 172,335.80
  4. Step 4: Simplify right side
    317,529.77x = 75,515,368,607.60
  5. Step 5: Solve for x
    x = 75,515,368,607.60/317,529.77
  6. Step 6: Final answer
    x = 237,821.39

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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.