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Finding the Fourth Proportional to 439,882.80, 607,045.32 and 238,678.80

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Solution

The fourth proportional to 439,882.80, 607,045.32 and 238,678.80 is: 329,380.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,882.80 : 607,045.32 = 238,678.80 : x
  2. Step 2: Convert to fraction form
    439,882.80/607,045.32 = 238,678.80/x
  3. Step 3: Cross multiply
    439,882.80x = 607,045.32 × 238,678.80
  4. Step 4: Simplify right side
    439,882.80x = 144,888,848,523.22
  5. Step 5: Solve for x
    x = 144,888,848,523.22/439,882.80
  6. Step 6: Final answer
    x = 329,380.57

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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.