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Finding the Fourth Proportional to 360,909.56, 497,724.26 and 309,904.94

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Solution

The fourth proportional to 360,909.56, 497,724.26 and 309,904.94 is: 427,384.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,909.56 : 497,724.26 = 309,904.94 : x
  2. Step 2: Convert to fraction form
    360,909.56/497,724.26 = 309,904.94/x
  3. Step 3: Cross multiply
    360,909.56x = 497,724.26 × 309,904.94
  4. Step 4: Simplify right side
    360,909.56x = 154,247,206,931.84
  5. Step 5: Solve for x
    x = 154,247,206,931.84/360,909.56
  6. Step 6: Final answer
    x = 427,384.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.