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Finding the Fourth Proportional to 288,262.10, 432,830.55 and 221,777.30

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Solution

The fourth proportional to 288,262.10, 432,830.55 and 221,777.30 is: 333,002.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,262.10 : 432,830.55 = 221,777.30 : x
  2. Step 2: Convert to fraction form
    288,262.10/432,830.55 = 221,777.30/x
  3. Step 3: Cross multiply
    288,262.10x = 432,830.55 × 221,777.30
  4. Step 4: Simplify right side
    288,262.10x = 95,991,990,736.52
  5. Step 5: Solve for x
    x = 95,991,990,736.52/288,262.10
  6. Step 6: Final answer
    x = 333,002.47

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1.5x scale

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.