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Finding the Fourth Proportional to 403,427.01, 605,043.63 and 119,040.72

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Solution

The fourth proportional to 403,427.01, 605,043.63 and 119,040.72 is: 178,532.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,427.01 : 605,043.63 = 119,040.72 : x
  2. Step 2: Convert to fraction form
    403,427.01/605,043.63 = 119,040.72/x
  3. Step 3: Cross multiply
    403,427.01x = 605,043.63 × 119,040.72
  4. Step 4: Simplify right side
    403,427.01x = 72,024,827,374.11
  5. Step 5: Solve for x
    x = 72,024,827,374.11/403,427.01
  6. Step 6: Final answer
    x = 178,532.49

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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.