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Finding the Fourth Proportional to 388,453.84, 583,217.42 and 268,228.64

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Solution

The fourth proportional to 388,453.84, 583,217.42 and 268,228.64 is: 402,713.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,453.84 : 583,217.42 = 268,228.64 : x
  2. Step 2: Convert to fraction form
    388,453.84/583,217.42 = 268,228.64/x
  3. Step 3: Cross multiply
    388,453.84x = 583,217.42 × 268,228.64
  4. Step 4: Simplify right side
    388,453.84x = 156,435,615,507.81
  5. Step 5: Solve for x
    x = 156,435,615,507.81/388,453.84
  6. Step 6: Final answer
    x = 402,713.53

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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.