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Finding the Fourth Proportional to 248,302.53, 342,633.78 and 139,381.93

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Solution

The fourth proportional to 248,302.53, 342,633.78 and 139,381.93 is: 192,333.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,302.53 : 342,633.78 = 139,381.93 : x
  2. Step 2: Convert to fraction form
    248,302.53/342,633.78 = 139,381.93/x
  3. Step 3: Cross multiply
    248,302.53x = 342,633.78 × 139,381.93
  4. Step 4: Simplify right side
    248,302.53x = 47,756,957,967.89
  5. Step 5: Solve for x
    x = 47,756,957,967.89/248,302.53
  6. Step 6: Final answer
    x = 192,333.75

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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.