Home / 389,880.55-583,935.09-305,112.43

Finding the Fourth Proportional to 389,880.55, 583,935.09 and 305,112.43

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Solution

The fourth proportional to 389,880.55, 583,935.09 and 305,112.43 is: 456,975.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,880.55 : 583,935.09 = 305,112.43 : x
  2. Step 2: Convert to fraction form
    389,880.55/583,935.09 = 305,112.43/x
  3. Step 3: Cross multiply
    389,880.55x = 583,935.09 × 305,112.43
  4. Step 4: Simplify right side
    389,880.55x = 178,165,854,272.17
  5. Step 5: Solve for x
    x = 178,165,854,272.17/389,880.55
  6. Step 6: Final answer
    x = 456,975.49

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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.