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Finding the Fourth Proportional to 388,908.30, 583,228.80 and 189,099.93

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Solution

The fourth proportional to 388,908.30, 583,228.80 and 189,099.93 is: 283,584.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,908.30 : 583,228.80 = 189,099.93 : x
  2. Step 2: Convert to fraction form
    388,908.30/583,228.80 = 189,099.93/x
  3. Step 3: Cross multiply
    388,908.30x = 583,228.80 × 189,099.93
  4. Step 4: Simplify right side
    388,908.30x = 110,288,525,253.98
  5. Step 5: Solve for x
    x = 110,288,525,253.98/388,908.30
  6. Step 6: Final answer
    x = 283,584.91

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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.