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Finding the Fourth Proportional to 439,218.64, 606,186.66 and 278,088.70

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Solution

The fourth proportional to 439,218.64, 606,186.66 and 278,088.70 is: 383,803.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,218.64 : 606,186.66 = 278,088.70 : x
  2. Step 2: Convert to fraction form
    439,218.64/606,186.66 = 278,088.70/x
  3. Step 3: Cross multiply
    439,218.64x = 606,186.66 × 278,088.70
  4. Step 4: Simplify right side
    439,218.64x = 168,573,660,236.74
  5. Step 5: Solve for x
    x = 168,573,660,236.74/439,218.64
  6. Step 6: Final answer
    x = 383,803.52

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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.