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Finding the Fourth Proportional to 319,387.80, 479,182.80 and 94,749.12

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Solution

The fourth proportional to 319,387.80, 479,182.80 and 94,749.12 is: 142,153.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,387.80 : 479,182.80 = 94,749.12 : x
  2. Step 2: Convert to fraction form
    319,387.80/479,182.80 = 94,749.12/x
  3. Step 3: Cross multiply
    319,387.80x = 479,182.80 × 94,749.12
  4. Step 4: Simplify right side
    319,387.80x = 45,402,148,619.14
  5. Step 5: Solve for x
    x = 45,402,148,619.14/319,387.80
  6. Step 6: Final answer
    x = 142,153.67

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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.