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Finding the Fourth Proportional to 439,918, 607,088.46 and 238,714

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Solution

The fourth proportional to 439,918, 607,088.46 and 238,714 is: 329,426.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,918 : 607,088.46 = 238,714 : x
  2. Step 2: Convert to fraction form
    439,918/607,088.46 = 238,714/x
  3. Step 3: Cross multiply
    439,918x = 607,088.46 × 238,714
  4. Step 4: Simplify right side
    439,918x = 144,920,514,640.44
  5. Step 5: Solve for x
    x = 144,920,514,640.44/439,918
  6. Step 6: Final answer
    x = 329,426.20

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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.