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Finding the Fourth Proportional to 439,882.56, 660,212.64 and 289,702.08

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Solution

The fourth proportional to 439,882.56, 660,212.64 and 289,702.08 is: 434,809.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,882.56 : 660,212.64 = 289,702.08 : x
  2. Step 2: Convert to fraction form
    439,882.56/660,212.64 = 289,702.08/x
  3. Step 3: Cross multiply
    439,882.56x = 660,212.64 × 289,702.08
  4. Step 4: Simplify right side
    439,882.56x = 191,264,975,050.29
  5. Step 5: Solve for x
    x = 191,264,975,050.29/439,882.56
  6. Step 6: Final answer
    x = 434,809.18

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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.