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Finding the Fourth Proportional to 317,443.89, 438,085.23 and 174,209.07

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Solution

The fourth proportional to 317,443.89, 438,085.23 and 174,209.07 is: 240,415.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,443.89 : 438,085.23 = 174,209.07 : x
  2. Step 2: Convert to fraction form
    317,443.89/438,085.23 = 174,209.07/x
  3. Step 3: Cross multiply
    317,443.89x = 438,085.23 × 174,209.07
  4. Step 4: Simplify right side
    317,443.89x = 76,318,420,499.04
  5. Step 5: Solve for x
    x = 76,318,420,499.04/317,443.89
  6. Step 6: Final answer
    x = 240,415.47

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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.