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Finding the Fourth Proportional to 320,750.08, 480,807.60 and 151,972

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Solution

The fourth proportional to 320,750.08, 480,807.60 and 151,972 is: 227,807.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,750.08 : 480,807.60 = 151,972 : x
  2. Step 2: Convert to fraction form
    320,750.08/480,807.60 = 151,972/x
  3. Step 3: Cross multiply
    320,750.08x = 480,807.60 × 151,972
  4. Step 4: Simplify right side
    320,750.08x = 73,069,292,587.20
  5. Step 5: Solve for x
    x = 73,069,292,587.20/320,750.08
  6. Step 6: Final answer
    x = 227,807.56

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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.