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Finding the Fourth Proportional to 319,007.01, 478,578.56 and 159,168.89

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Solution

The fourth proportional to 319,007.01, 478,578.56 and 159,168.89 is: 238,787.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,007.01 : 478,578.56 = 159,168.89 : x
  2. Step 2: Convert to fraction form
    319,007.01/478,578.56 = 159,168.89/x
  3. Step 3: Cross multiply
    319,007.01x = 478,578.56 × 159,168.89
  4. Step 4: Simplify right side
    319,007.01x = 76,174,817,377.15
  5. Step 5: Solve for x
    x = 76,174,817,377.15/319,007.01
  6. Step 6: Final answer
    x = 238,787.28

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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.