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Finding the Fourth Proportional to 415,343.40, 623,015.10 and 273,625.80

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Solution

The fourth proportional to 415,343.40, 623,015.10 and 273,625.80 is: 410,438.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,343.40 : 623,015.10 = 273,625.80 : x
  2. Step 2: Convert to fraction form
    415,343.40/623,015.10 = 273,625.80/x
  3. Step 3: Cross multiply
    415,343.40x = 623,015.10 × 273,625.80
  4. Step 4: Simplify right side
    415,343.40x = 170,473,005,149.58
  5. Step 5: Solve for x
    x = 170,473,005,149.58/415,343.40
  6. Step 6: Final answer
    x = 410,438.70

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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.