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Finding the Fourth Proportional to 439,878.78, 607,032.30 and 238,674.78

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Solution

The fourth proportional to 439,878.78, 607,032.30 and 238,674.78 is: 329,370.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,878.78 : 607,032.30 = 238,674.78 : x
  2. Step 2: Convert to fraction form
    439,878.78/607,032.30 = 238,674.78/x
  3. Step 3: Cross multiply
    439,878.78x = 607,032.30 × 238,674.78
  4. Step 4: Simplify right side
    439,878.78x = 144,883,300,655.39
  5. Step 5: Solve for x
    x = 144,883,300,655.39/439,878.78
  6. Step 6: Final answer
    x = 329,370.97

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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.