Home / 420,519.60-580,317.08-229,533.01

Finding the Fourth Proportional to 420,519.60, 580,317.08 and 229,533.01

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Solution

The fourth proportional to 420,519.60, 580,317.08 and 229,533.01 is: 316,755.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,519.60 : 580,317.08 = 229,533.01 : x
  2. Step 2: Convert to fraction form
    420,519.60/580,317.08 = 229,533.01/x
  3. Step 3: Cross multiply
    420,519.60x = 580,317.08 × 229,533.01
  4. Step 4: Simplify right side
    420,519.60x = 133,201,923,528.35
  5. Step 5: Solve for x
    x = 133,201,923,528.35/420,519.60
  6. Step 6: Final answer
    x = 316,755.57

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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.