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Finding the Fourth Proportional to 253,424.05, 349,710.95 and 138,702.46

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Solution

The fourth proportional to 253,424.05, 349,710.95 and 138,702.46 is: 191,401.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,424.05 : 349,710.95 = 138,702.46 : x
  2. Step 2: Convert to fraction form
    253,424.05/349,710.95 = 138,702.46/x
  3. Step 3: Cross multiply
    253,424.05x = 349,710.95 × 138,702.46
  4. Step 4: Simplify right side
    253,424.05x = 48,505,768,526.42
  5. Step 5: Solve for x
    x = 48,505,768,526.42/253,424.05
  6. Step 6: Final answer
    x = 191,401.60

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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.