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Finding the Fourth Proportional to 253,005.04, 349,133.25 and 139,820.50

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Solution

The fourth proportional to 253,005.04, 349,133.25 and 139,820.50 is: 192,944.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,005.04 : 349,133.25 = 139,820.50 : x
  2. Step 2: Convert to fraction form
    253,005.04/349,133.25 = 139,820.50/x
  3. Step 3: Cross multiply
    253,005.04x = 349,133.25 × 139,820.50
  4. Step 4: Simplify right side
    253,005.04x = 48,815,985,581.63
  5. Step 5: Solve for x
    x = 48,815,985,581.63/253,005.04
  6. Step 6: Final answer
    x = 192,944.72

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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.