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Finding the Fourth Proportional to 254,562.76, 351,276 and 147,139.72

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Solution

The fourth proportional to 254,562.76, 351,276 and 147,139.72 is: 203,040.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,562.76 : 351,276 = 147,139.72 : x
  2. Step 2: Convert to fraction form
    254,562.76/351,276 = 147,139.72/x
  3. Step 3: Cross multiply
    254,562.76x = 351,276 × 147,139.72
  4. Step 4: Simplify right side
    254,562.76x = 51,686,652,282.72
  5. Step 5: Solve for x
    x = 51,686,652,282.72/254,562.76
  6. Step 6: Final answer
    x = 203,040.90

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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.