Home / 309,732.98-426,979.08-218,928.74

Finding the Fourth Proportional to 309,732.98, 426,979.08 and 218,928.74

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Solution

The fourth proportional to 309,732.98, 426,979.08 and 218,928.74 is: 301,801.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,732.98 : 426,979.08 = 218,928.74 : x
  2. Step 2: Convert to fraction form
    309,732.98/426,979.08 = 218,928.74/x
  3. Step 3: Cross multiply
    309,732.98x = 426,979.08 × 218,928.74
  4. Step 4: Simplify right side
    309,732.98x = 93,477,989,855.86
  5. Step 5: Solve for x
    x = 93,477,989,855.86/309,732.98
  6. Step 6: Final answer
    x = 301,801.87

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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.