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Finding the Fourth Proportional to 319,559.84, 440,991.60 and 176,318.60

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Solution

The fourth proportional to 319,559.84, 440,991.60 and 176,318.60 is: 243,319.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,559.84 : 440,991.60 = 176,318.60 : x
  2. Step 2: Convert to fraction form
    319,559.84/440,991.60 = 176,318.60/x
  3. Step 3: Cross multiply
    319,559.84x = 440,991.60 × 176,318.60
  4. Step 4: Simplify right side
    319,559.84x = 77,755,021,523.76
  5. Step 5: Solve for x
    x = 77,755,021,523.76/319,559.84
  6. Step 6: Final answer
    x = 243,319.13

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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.