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Finding the Fourth Proportional to 253,820.55, 350,272.74 and 139,080.96

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Solution

The fourth proportional to 253,820.55, 350,272.74 and 139,080.96 is: 191,931.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,820.55 : 350,272.74 = 139,080.96 : x
  2. Step 2: Convert to fraction form
    253,820.55/350,272.74 = 139,080.96/x
  3. Step 3: Cross multiply
    253,820.55x = 350,272.74 × 139,080.96
  4. Step 4: Simplify right side
    253,820.55x = 48,716,268,941.03
  5. Step 5: Solve for x
    x = 48,716,268,941.03/253,820.55
  6. Step 6: Final answer
    x = 191,931.93

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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.