Home / 425,708.55-637,688.03-215,464.95

Finding the Fourth Proportional to 425,708.55, 637,688.03 and 215,464.95

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Solution

The fourth proportional to 425,708.55, 637,688.03 and 215,464.95 is: 322,754.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,708.55 : 637,688.03 = 215,464.95 : x
  2. Step 2: Convert to fraction form
    425,708.55/637,688.03 = 215,464.95/x
  3. Step 3: Cross multiply
    425,708.55x = 637,688.03 × 215,464.95
  4. Step 4: Simplify right side
    425,708.55x = 137,399,418,422.22
  5. Step 5: Solve for x
    x = 137,399,418,422.22/425,708.55
  6. Step 6: Final answer
    x = 322,754.66

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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.