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Finding the Fourth Proportional to 554,399.60, 831,651.91 and 155,040.30

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Solution

The fourth proportional to 554,399.60, 831,651.91 and 155,040.30 is: 232,575.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,399.60 : 831,651.91 = 155,040.30 : x
  2. Step 2: Convert to fraction form
    554,399.60/831,651.91 = 155,040.30/x
  3. Step 3: Cross multiply
    554,399.60x = 831,651.91 × 155,040.30
  4. Step 4: Simplify right side
    554,399.60x = 128,939,561,234.37
  5. Step 5: Solve for x
    x = 128,939,561,234.37/554,399.60
  6. Step 6: Final answer
    x = 232,575.14

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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.