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Finding the Fourth Proportional to 253,280.93, 349,512.98 and 138,538.22

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Solution

The fourth proportional to 253,280.93, 349,512.98 and 138,538.22 is: 191,174.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,280.93 : 349,512.98 = 138,538.22 : x
  2. Step 2: Convert to fraction form
    253,280.93/349,512.98 = 138,538.22/x
  3. Step 3: Cross multiply
    253,280.93x = 349,512.98 × 138,538.22
  4. Step 4: Simplify right side
    253,280.93x = 48,420,903,675.84
  5. Step 5: Solve for x
    x = 48,420,903,675.84/253,280.93
  6. Step 6: Final answer
    x = 191,174.70

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1.5x scale

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.