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Finding the Fourth Proportional to 451,420.36, 676,933.69 and 170,740.78

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Solution

The fourth proportional to 451,420.36, 676,933.69 and 170,740.78 is: 256,036.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,420.36 : 676,933.69 = 170,740.78 : x
  2. Step 2: Convert to fraction form
    451,420.36/676,933.69 = 170,740.78/x
  3. Step 3: Cross multiply
    451,420.36x = 676,933.69 × 170,740.78
  4. Step 4: Simplify right side
    451,420.36x = 115,580,186,658.19
  5. Step 5: Solve for x
    x = 115,580,186,658.19/451,420.36
  6. Step 6: Final answer
    x = 256,036.72

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1.5x scale

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.