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Finding the Fourth Proportional to 453,186.88, 679,780.32 and 215,809.84

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Solution

The fourth proportional to 453,186.88, 679,780.32 and 215,809.84 is: 323,714.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,186.88 : 679,780.32 = 215,809.84 : x
  2. Step 2: Convert to fraction form
    453,186.88/679,780.32 = 215,809.84/x
  3. Step 3: Cross multiply
    453,186.88x = 679,780.32 × 215,809.84
  4. Step 4: Simplify right side
    453,186.88x = 146,703,282,094.35
  5. Step 5: Solve for x
    x = 146,703,282,094.35/453,186.88
  6. Step 6: Final answer
    x = 323,714.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.