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Finding the Fourth Proportional to 316,315.53, 474,473.61 and 129,327.03

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Solution

The fourth proportional to 316,315.53, 474,473.61 and 129,327.03 is: 193,990.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,315.53 : 474,473.61 = 129,327.03 : x
  2. Step 2: Convert to fraction form
    316,315.53/474,473.61 = 129,327.03/x
  3. Step 3: Cross multiply
    316,315.53x = 474,473.61 × 129,327.03
  4. Step 4: Simplify right side
    316,315.53x = 61,362,262,794.68
  5. Step 5: Solve for x
    x = 61,362,262,794.68/316,315.53
  6. Step 6: Final answer
    x = 193,990.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.