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Finding the Fourth Proportional to 423,492.48, 635,238.72 and 143,206.56

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Solution

The fourth proportional to 423,492.48, 635,238.72 and 143,206.56 is: 214,809.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,492.48 : 635,238.72 = 143,206.56 : x
  2. Step 2: Convert to fraction form
    423,492.48/635,238.72 = 143,206.56/x
  3. Step 3: Cross multiply
    423,492.48x = 635,238.72 × 143,206.56
  4. Step 4: Simplify right side
    423,492.48x = 90,970,351,870.00
  5. Step 5: Solve for x
    x = 90,970,351,870.00/423,492.48
  6. Step 6: Final answer
    x = 214,809.84

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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.