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Finding the Fourth Proportional to 248,591.40, 343,045.06 and 145,235.18

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Solution

The fourth proportional to 248,591.40, 343,045.06 and 145,235.18 is: 200,418.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,591.40 : 343,045.06 = 145,235.18 : x
  2. Step 2: Convert to fraction form
    248,591.40/343,045.06 = 145,235.18/x
  3. Step 3: Cross multiply
    248,591.40x = 343,045.06 × 145,235.18
  4. Step 4: Simplify right side
    248,591.40x = 49,822,211,531.74
  5. Step 5: Solve for x
    x = 49,822,211,531.74/248,591.40
  6. Step 6: Final answer
    x = 200,418.08

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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.