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Finding the Fourth Proportional to 437,773.80, 656,271.90 and 288,085.80

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Solution

The fourth proportional to 437,773.80, 656,271.90 and 288,085.80 is: 431,872.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,773.80 : 656,271.90 = 288,085.80 : x
  2. Step 2: Convert to fraction form
    437,773.80/656,271.90 = 288,085.80/x
  3. Step 3: Cross multiply
    437,773.80x = 656,271.90 × 288,085.80
  4. Step 4: Simplify right side
    437,773.80x = 189,062,615,329.02
  5. Step 5: Solve for x
    x = 189,062,615,329.02/437,773.80
  6. Step 6: Final answer
    x = 431,872.84

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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.