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Finding the Fourth Proportional to 319,319.28, 440,652.60 and 176,077.20

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Solution

The fourth proportional to 319,319.28, 440,652.60 and 176,077.20 is: 242,982.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,319.28 : 440,652.60 = 176,077.20 : x
  2. Step 2: Convert to fraction form
    319,319.28/440,652.60 = 176,077.20/x
  3. Step 3: Cross multiply
    319,319.28x = 440,652.60 × 176,077.20
  4. Step 4: Simplify right side
    319,319.28x = 77,588,875,980.72
  5. Step 5: Solve for x
    x = 77,588,875,980.72/319,319.28
  6. Step 6: Final answer
    x = 242,982.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.