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Finding the Fourth Proportional to 364,559.40, 547,875.90 and 318,940.20

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Solution

The fourth proportional to 364,559.40, 547,875.90 and 318,940.20 is: 479,317.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,559.40 : 547,875.90 = 318,940.20 : x
  2. Step 2: Convert to fraction form
    364,559.40/547,875.90 = 318,940.20/x
  3. Step 3: Cross multiply
    364,559.40x = 547,875.90 × 318,940.20
  4. Step 4: Simplify right side
    364,559.40x = 174,739,649,121.18
  5. Step 5: Solve for x
    x = 174,739,649,121.18/364,559.40
  6. Step 6: Final answer
    x = 479,317.36

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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.