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Finding the Fourth Proportional to 319,440.80, 479,161.20 and 97,824.80

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Solution

The fourth proportional to 319,440.80, 479,161.20 and 97,824.80 is: 146,737.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,440.80 : 479,161.20 = 97,824.80 : x
  2. Step 2: Convert to fraction form
    319,440.80/479,161.20 = 97,824.80/x
  3. Step 3: Cross multiply
    319,440.80x = 479,161.20 × 97,824.80
  4. Step 4: Simplify right side
    319,440.80x = 46,873,848,557.76
  5. Step 5: Solve for x
    x = 46,873,848,557.76/319,440.80
  6. Step 6: Final answer
    x = 146,737.20

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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.