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Finding the Fourth Proportional to 253,425.05, 349,712.33 and 138,703.46

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Solution

The fourth proportional to 253,425.05, 349,712.33 and 138,703.46 is: 191,402.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,425.05 : 349,712.33 = 138,703.46 : x
  2. Step 2: Convert to fraction form
    253,425.05/349,712.33 = 138,703.46/x
  3. Step 3: Cross multiply
    253,425.05x = 349,712.33 × 138,703.46
  4. Step 4: Simplify right side
    253,425.05x = 48,506,310,175.66
  5. Step 5: Solve for x
    x = 48,506,310,175.66/253,425.05
  6. Step 6: Final answer
    x = 191,402.98

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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.