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Finding the Fourth Proportional to 319,553.55, 440,983.56 and 176,313.58

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Solution

The fourth proportional to 319,553.55, 440,983.56 and 176,313.58 is: 243,312.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,553.55 : 440,983.56 = 176,313.58 : x
  2. Step 2: Convert to fraction form
    319,553.55/440,983.56 = 176,313.58/x
  3. Step 3: Cross multiply
    319,553.55x = 440,983.56 × 176,313.58
  4. Step 4: Simplify right side
    319,553.55x = 77,751,389,082.29
  5. Step 5: Solve for x
    x = 77,751,389,082.29/319,553.55
  6. Step 6: Final answer
    x = 243,312.55

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1.5x scale

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.