Home / 420,187.35-630,281.04-153,839.91

Finding the Fourth Proportional to 420,187.35, 630,281.04 and 153,839.91

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Solution

The fourth proportional to 420,187.35, 630,281.04 and 153,839.91 is: 230,759.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,187.35 : 630,281.04 = 153,839.91 : x
  2. Step 2: Convert to fraction form
    420,187.35/630,281.04 = 153,839.91/x
  3. Step 3: Cross multiply
    420,187.35x = 630,281.04 × 153,839.91
  4. Step 4: Simplify right side
    420,187.35x = 96,962,378,468.31
  5. Step 5: Solve for x
    x = 96,962,378,468.31/420,187.35
  6. Step 6: Final answer
    x = 230,759.87

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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.