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Finding the Fourth Proportional to 317,796.95, 438,562.95 and 172,605.56

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Solution

The fourth proportional to 317,796.95, 438,562.95 and 172,605.56 is: 238,197.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,796.95 : 438,562.95 = 172,605.56 : x
  2. Step 2: Convert to fraction form
    317,796.95/438,562.95 = 172,605.56/x
  3. Step 3: Cross multiply
    317,796.95x = 438,562.95 × 172,605.56
  4. Step 4: Simplify right side
    317,796.95x = 75,698,403,580.00
  5. Step 5: Solve for x
    x = 75,698,403,580.00/317,796.95
  6. Step 6: Final answer
    x = 238,197.39

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1.5x scale

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.