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Finding the Fourth Proportional to 318,456.77, 439,470.32 and 175,216.79

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Solution

The fourth proportional to 318,456.77, 439,470.32 and 175,216.79 is: 241,799.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,456.77 : 439,470.32 = 175,216.79 : x
  2. Step 2: Convert to fraction form
    318,456.77/439,470.32 = 175,216.79/x
  3. Step 3: Cross multiply
    318,456.77x = 439,470.32 × 175,216.79
  4. Step 4: Simplify right side
    318,456.77x = 77,002,578,993.26
  5. Step 5: Solve for x
    x = 77,002,578,993.26/318,456.77
  6. Step 6: Final answer
    x = 241,799.16

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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.