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Finding the Fourth Proportional to 317,428.88, 438,058.55 and 174,187.67

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Solution

The fourth proportional to 317,428.88, 438,058.55 and 174,187.67 is: 240,382.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,428.88 : 438,058.55 = 174,187.67 : x
  2. Step 2: Convert to fraction form
    317,428.88/438,058.55 = 174,187.67/x
  3. Step 3: Cross multiply
    317,428.88x = 438,058.55 × 174,187.67
  4. Step 4: Simplify right side
    317,428.88x = 76,304,397,277.14
  5. Step 5: Solve for x
    x = 76,304,397,277.14/317,428.88
  6. Step 6: Final answer
    x = 240,382.66

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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.