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Finding the Fourth Proportional to 316,911.42, 437,347.89 and 173,680.47

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Solution

The fourth proportional to 316,911.42, 437,347.89 and 173,680.47 is: 239,684.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,911.42 : 437,347.89 = 173,680.47 : x
  2. Step 2: Convert to fraction form
    316,911.42/437,347.89 = 173,680.47/x
  3. Step 3: Cross multiply
    316,911.42x = 437,347.89 × 173,680.47
  4. Step 4: Simplify right side
    316,911.42x = 75,958,787,088.71
  5. Step 5: Solve for x
    x = 75,958,787,088.71/316,911.42
  6. Step 6: Final answer
    x = 239,684.60

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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.