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Finding the Fourth Proportional to 243,396.90, 365,030.55 and 74,916.90

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Solution

The fourth proportional to 243,396.90, 365,030.55 and 74,916.90 is: 112,355.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,396.90 : 365,030.55 = 74,916.90 : x
  2. Step 2: Convert to fraction form
    243,396.90/365,030.55 = 74,916.90/x
  3. Step 3: Cross multiply
    243,396.90x = 365,030.55 × 74,916.90
  4. Step 4: Simplify right side
    243,396.90x = 27,346,957,211.30
  5. Step 5: Solve for x
    x = 27,346,957,211.30/243,396.90
  6. Step 6: Final answer
    x = 112,355.40

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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.