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Finding the Fourth Proportional to 319,549.42, 440,991.54 and 176,318.74

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Solution

The fourth proportional to 319,549.42, 440,991.54 and 176,318.74 is: 243,327.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,549.42 : 440,991.54 = 176,318.74 : x
  2. Step 2: Convert to fraction form
    319,549.42/440,991.54 = 176,318.74/x
  3. Step 3: Cross multiply
    319,549.42x = 440,991.54 × 176,318.74
  4. Step 4: Simplify right side
    319,549.42x = 77,755,072,683.46
  5. Step 5: Solve for x
    x = 77,755,072,683.46/319,549.42
  6. Step 6: Final answer
    x = 243,327.22

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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.