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Finding the Fourth Proportional to 318,578.84, 439,641.88 and 175,342.16

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Solution

The fourth proportional to 318,578.84, 439,641.88 and 175,342.16 is: 241,973.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,578.84 : 439,641.88 = 175,342.16 : x
  2. Step 2: Convert to fraction form
    318,578.84/439,641.88 = 175,342.16/x
  3. Step 3: Cross multiply
    318,578.84x = 439,641.88 × 175,342.16
  4. Step 4: Simplify right side
    318,578.84x = 77,087,756,865.66
  5. Step 5: Solve for x
    x = 77,087,756,865.66/318,578.84
  6. Step 6: Final answer
    x = 241,973.88

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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.