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Finding the Fourth Proportional to 319,007.56, 478,585.38 and 108,647.32

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Solution

The fourth proportional to 319,007.56, 478,585.38 and 108,647.32 is: 162,996.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,007.56 : 478,585.38 = 108,647.32 : x
  2. Step 2: Convert to fraction form
    319,007.56/478,585.38 = 108,647.32/x
  3. Step 3: Cross multiply
    319,007.56x = 478,585.38 × 108,647.32
  4. Step 4: Simplify right side
    319,007.56x = 51,997,018,928.18
  5. Step 5: Solve for x
    x = 51,997,018,928.18/319,007.56
  6. Step 6: Final answer
    x = 162,996.20

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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.