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Finding the Fourth Proportional to 253,530.54, 349,868.70 and 138,807.72

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Solution

The fourth proportional to 253,530.54, 349,868.70 and 138,807.72 is: 191,552.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,530.54 : 349,868.70 = 138,807.72 : x
  2. Step 2: Convert to fraction form
    253,530.54/349,868.70 = 138,807.72/x
  3. Step 3: Cross multiply
    253,530.54x = 349,868.70 × 138,807.72
  4. Step 4: Simplify right side
    253,530.54x = 48,564,476,546.36
  5. Step 5: Solve for x
    x = 48,564,476,546.36/253,530.54
  6. Step 6: Final answer
    x = 191,552.77

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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.