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Finding the Fourth Proportional to 316,756.31, 437,123.79 and 173,521.45

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Solution

The fourth proportional to 316,756.31, 437,123.79 and 173,521.45 is: 239,459.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,756.31 : 437,123.79 = 173,521.45 : x
  2. Step 2: Convert to fraction form
    316,756.31/437,123.79 = 173,521.45/x
  3. Step 3: Cross multiply
    316,756.31x = 437,123.79 × 173,521.45
  4. Step 4: Simplify right side
    316,756.31x = 75,850,351,684.68
  5. Step 5: Solve for x
    x = 75,850,351,684.68/316,756.31
  6. Step 6: Final answer
    x = 239,459.64

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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.