Home / 402,140.95-603,298.22-135,895.57

Finding the Fourth Proportional to 402,140.95, 603,298.22 and 135,895.57

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Solution

The fourth proportional to 402,140.95, 603,298.22 and 135,895.57 is: 203,872.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,140.95 : 603,298.22 = 135,895.57 : x
  2. Step 2: Convert to fraction form
    402,140.95/603,298.22 = 135,895.57/x
  3. Step 3: Cross multiply
    402,140.95x = 603,298.22 × 135,895.57
  4. Step 4: Simplify right side
    402,140.95x = 81,985,553,299.16
  5. Step 5: Solve for x
    x = 81,985,553,299.16/402,140.95
  6. Step 6: Final answer
    x = 203,872.68

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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.