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Finding the Fourth Proportional to 319,675.40, 479,901.90 and 240,165.80

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Solution

The fourth proportional to 319,675.40, 479,901.90 and 240,165.80 is: 360,540.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,675.40 : 479,901.90 = 240,165.80 : x
  2. Step 2: Convert to fraction form
    319,675.40/479,901.90 = 240,165.80/x
  3. Step 3: Cross multiply
    319,675.40x = 479,901.90 × 240,165.80
  4. Step 4: Simplify right side
    319,675.40x = 115,256,023,735.02
  5. Step 5: Solve for x
    x = 115,256,023,735.02/319,675.40
  6. Step 6: Final answer
    x = 360,540.80

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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.