Home / 420,140.06-579,800.20-229,153.46

Finding the Fourth Proportional to 420,140.06, 579,800.20 and 229,153.46

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Solution

The fourth proportional to 420,140.06, 579,800.20 and 229,153.46 is: 316,235.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,140.06 : 579,800.20 = 229,153.46 : x
  2. Step 2: Convert to fraction form
    420,140.06/579,800.20 = 229,153.46/x
  3. Step 3: Cross multiply
    420,140.06x = 579,800.20 × 229,153.46
  4. Step 4: Simplify right side
    420,140.06x = 132,863,218,466.81
  5. Step 5: Solve for x
    x = 132,863,218,466.81/420,140.06
  6. Step 6: Final answer
    x = 316,235.54

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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.