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Finding the Fourth Proportional to 309,364.53, 426,124.47 and 218,562.87

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Solution

The fourth proportional to 309,364.53, 426,124.47 and 218,562.87 is: 301,052.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,364.53 : 426,124.47 = 218,562.87 : x
  2. Step 2: Convert to fraction form
    309,364.53/426,124.47 = 218,562.87/x
  3. Step 3: Cross multiply
    309,364.53x = 426,124.47 × 218,562.87
  4. Step 4: Simplify right side
    309,364.53x = 93,134,987,140.43
  5. Step 5: Solve for x
    x = 93,134,987,140.43/309,364.53
  6. Step 6: Final answer
    x = 301,052.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.