Home / 461,316.80-691,845.60-145,870.40

Finding the Fourth Proportional to 461,316.80, 691,845.60 and 145,870.40

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Solution

The fourth proportional to 461,316.80, 691,845.60 and 145,870.40 is: 218,764.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,316.80 : 691,845.60 = 145,870.40 : x
  2. Step 2: Convert to fraction form
    461,316.80/691,845.60 = 145,870.40/x
  3. Step 3: Cross multiply
    461,316.80x = 691,845.60 × 145,870.40
  4. Step 4: Simplify right side
    461,316.80x = 100,919,794,410.24
  5. Step 5: Solve for x
    x = 100,919,794,410.24/461,316.80
  6. Step 6: Final answer
    x = 218,764.62

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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.