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Finding the Fourth Proportional to 538,091.10, 742,570.74 and 296,374.55

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Solution

The fourth proportional to 538,091.10, 742,570.74 and 296,374.55 is: 408,999.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,091.10 : 742,570.74 = 296,374.55 : x
  2. Step 2: Convert to fraction form
    538,091.10/742,570.74 = 296,374.55/x
  3. Step 3: Cross multiply
    538,091.10x = 742,570.74 × 296,374.55
  4. Step 4: Simplify right side
    538,091.10x = 220,079,065,197.81
  5. Step 5: Solve for x
    x = 220,079,065,197.81/538,091.10
  6. Step 6: Final answer
    x = 408,999.64

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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.