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Finding the Fourth Proportional to 328,515.40, 492,773.10 and 227,038.60

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Solution

The fourth proportional to 328,515.40, 492,773.10 and 227,038.60 is: 340,557.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,515.40 : 492,773.10 = 227,038.60 : x
  2. Step 2: Convert to fraction form
    328,515.40/492,773.10 = 227,038.60/x
  3. Step 3: Cross multiply
    328,515.40x = 492,773.10 × 227,038.60
  4. Step 4: Simplify right side
    328,515.40x = 111,878,514,741.66
  5. Step 5: Solve for x
    x = 111,878,514,741.66/328,515.40
  6. Step 6: Final answer
    x = 340,557.90

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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.