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Finding the Fourth Proportional to 367,639.40, 551,459.10 and 308,590.40

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Solution

The fourth proportional to 367,639.40, 551,459.10 and 308,590.40 is: 462,885.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,639.40 : 551,459.10 = 308,590.40 : x
  2. Step 2: Convert to fraction form
    367,639.40/551,459.10 = 308,590.40/x
  3. Step 3: Cross multiply
    367,639.40x = 551,459.10 × 308,590.40
  4. Step 4: Simplify right side
    367,639.40x = 170,174,984,252.64
  5. Step 5: Solve for x
    x = 170,174,984,252.64/367,639.40
  6. Step 6: Final answer
    x = 462,885.60

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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.