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Finding the Fourth Proportional to 248,436.38, 342,842.29 and 139,540.91

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Solution

The fourth proportional to 248,436.38, 342,842.29 and 139,540.91 is: 192,566.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,436.38 : 342,842.29 = 139,540.91 : x
  2. Step 2: Convert to fraction form
    248,436.38/342,842.29 = 139,540.91/x
  3. Step 3: Cross multiply
    248,436.38x = 342,842.29 × 139,540.91
  4. Step 4: Simplify right side
    248,436.38x = 47,840,523,070.02
  5. Step 5: Solve for x
    x = 47,840,523,070.02/248,436.38
  6. Step 6: Final answer
    x = 192,566.49

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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.