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Finding the Fourth Proportional to 475,084.73, 655,682.15 and 291,290.79

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Solution

The fourth proportional to 475,084.73, 655,682.15 and 291,290.79 is: 402,021.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,084.73 : 655,682.15 = 291,290.79 : x
  2. Step 2: Convert to fraction form
    475,084.73/655,682.15 = 291,290.79/x
  3. Step 3: Cross multiply
    475,084.73x = 655,682.15 × 291,290.79
  4. Step 4: Simplify right side
    475,084.73x = 190,994,170,005.95
  5. Step 5: Solve for x
    x = 190,994,170,005.95/475,084.73
  6. Step 6: Final answer
    x = 402,021.28

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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.