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Finding the Fourth Proportional to 351,030.40, 526,718.40 and 266,761.60

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Solution

The fourth proportional to 351,030.40, 526,718.40 and 266,761.60 is: 400,273.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,030.40 : 526,718.40 = 266,761.60 : x
  2. Step 2: Convert to fraction form
    351,030.40/526,718.40 = 266,761.60/x
  3. Step 3: Cross multiply
    351,030.40x = 526,718.40 × 266,761.60
  4. Step 4: Simplify right side
    351,030.40x = 140,508,243,133.44
  5. Step 5: Solve for x
    x = 140,508,243,133.44/351,030.40
  6. Step 6: Final answer
    x = 400,273.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.