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Finding the Fourth Proportional to 253,655.55, 350,043.93 and 140,478.30

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Solution

The fourth proportional to 253,655.55, 350,043.93 and 140,478.30 is: 193,859.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,655.55 : 350,043.93 = 140,478.30 : x
  2. Step 2: Convert to fraction form
    253,655.55/350,043.93 = 140,478.30/x
  3. Step 3: Cross multiply
    253,655.55x = 350,043.93 × 140,478.30
  4. Step 4: Simplify right side
    253,655.55x = 49,173,576,211.72
  5. Step 5: Solve for x
    x = 49,173,576,211.72/253,655.55
  6. Step 6: Final answer
    x = 193,859.65

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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.