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Finding the Fourth Proportional to 322,938.60, 484,407.90 and 308,423.40

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Solution

The fourth proportional to 322,938.60, 484,407.90 and 308,423.40 is: 462,635.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,938.60 : 484,407.90 = 308,423.40 : x
  2. Step 2: Convert to fraction form
    322,938.60/484,407.90 = 308,423.40/x
  3. Step 3: Cross multiply
    322,938.60x = 484,407.90 × 308,423.40
  4. Step 4: Simplify right side
    322,938.60x = 149,402,731,504.86
  5. Step 5: Solve for x
    x = 149,402,731,504.86/322,938.60
  6. Step 6: Final answer
    x = 462,635.10

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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.