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Finding the Fourth Proportional to 642,528.99, 963,668.87 and 243,200.91

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Solution

The fourth proportional to 642,528.99, 963,668.87 and 243,200.91 is: 364,754.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,528.99 : 963,668.87 = 243,200.91 : x
  2. Step 2: Convert to fraction form
    642,528.99/963,668.87 = 243,200.91/x
  3. Step 3: Cross multiply
    642,528.99x = 963,668.87 × 243,200.91
  4. Step 4: Simplify right side
    642,528.99x = 234,365,145,514.67
  5. Step 5: Solve for x
    x = 234,365,145,514.67/642,528.99
  6. Step 6: Final answer
    x = 364,754.20

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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.