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Finding the Fourth Proportional to 388,880.43, 583,953.50 and 240,066.69

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Solution

The fourth proportional to 388,880.43, 583,953.50 and 240,066.69 is: 360,490.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,880.43 : 583,953.50 = 240,066.69 : x
  2. Step 2: Convert to fraction form
    388,880.43/583,953.50 = 240,066.69/x
  3. Step 3: Cross multiply
    388,880.43x = 583,953.50 × 240,066.69
  4. Step 4: Simplify right side
    388,880.43x = 140,187,783,858.92
  5. Step 5: Solve for x
    x = 140,187,783,858.92/388,880.43
  6. Step 6: Final answer
    x = 360,490.71

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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.