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Finding the Fourth Proportional to 388,937.63, 583,406.44 and 126,281.63

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Solution

The fourth proportional to 388,937.63, 583,406.44 and 126,281.63 is: 189,422.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,937.63 : 583,406.44 = 126,281.63 : x
  2. Step 2: Convert to fraction form
    388,937.63/583,406.44 = 126,281.63/x
  3. Step 3: Cross multiply
    388,937.63x = 583,406.44 × 126,281.63
  4. Step 4: Simplify right side
    388,937.63x = 73,673,516,195.70
  5. Step 5: Solve for x
    x = 73,673,516,195.70/388,937.63
  6. Step 6: Final answer
    x = 189,422.44

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1.5x scale

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.