Home / 421,230.11-581,216.85-239,938.07

Finding the Fourth Proportional to 421,230.11, 581,216.85 and 239,938.07

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Solution

The fourth proportional to 421,230.11, 581,216.85 and 239,938.07 is: 331,068.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,230.11 : 581,216.85 = 239,938.07 : x
  2. Step 2: Convert to fraction form
    421,230.11/581,216.85 = 239,938.07/x
  3. Step 3: Cross multiply
    421,230.11x = 581,216.85 × 239,938.07
  4. Step 4: Simplify right side
    421,230.11x = 139,456,046,334.40
  5. Step 5: Solve for x
    x = 139,456,046,334.40/421,230.11
  6. Step 6: Final answer
    x = 331,068.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.