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Finding the Fourth Proportional to 248,449.66, 342,868.88 and 139,573.10

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Solution

The fourth proportional to 248,449.66, 342,868.88 and 139,573.10 is: 192,615.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,449.66 : 342,868.88 = 139,573.10 : x
  2. Step 2: Convert to fraction form
    248,449.66/342,868.88 = 139,573.10/x
  3. Step 3: Cross multiply
    248,449.66x = 342,868.88 × 139,573.10
  4. Step 4: Simplify right side
    248,449.66x = 47,855,272,475.13
  5. Step 5: Solve for x
    x = 47,855,272,475.13/248,449.66
  6. Step 6: Final answer
    x = 192,615.57

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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.