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Finding the Fourth Proportional to 316,713.40, 437,064.57 and 173,478.58

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Solution

The fourth proportional to 316,713.40, 437,064.57 and 173,478.58 is: 239,400.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,713.40 : 437,064.57 = 173,478.58 : x
  2. Step 2: Convert to fraction form
    316,713.40/437,064.57 = 173,478.58/x
  3. Step 3: Cross multiply
    316,713.40x = 437,064.57 × 173,478.58
  4. Step 4: Simplify right side
    316,713.40x = 75,821,339,879.25
  5. Step 5: Solve for x
    x = 75,821,339,879.25/316,713.40
  6. Step 6: Final answer
    x = 239,400.48

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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.