Home / 388,936.63-583,404.94-126,280.63

Finding the Fourth Proportional to 388,936.63, 583,404.94 and 126,280.63

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Solution

The fourth proportional to 388,936.63, 583,404.94 and 126,280.63 is: 189,420.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,936.63 : 583,404.94 = 126,280.63 : x
  2. Step 2: Convert to fraction form
    388,936.63/583,404.94 = 126,280.63/x
  3. Step 3: Cross multiply
    388,936.63x = 583,404.94 × 126,280.63
  4. Step 4: Simplify right side
    388,936.63x = 73,672,740,451.29
  5. Step 5: Solve for x
    x = 73,672,740,451.29/388,936.63
  6. Step 6: Final answer
    x = 189,420.94

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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.