Home / 261,485.10-392,219.55-74,496.60

Finding the Fourth Proportional to 261,485.10, 392,219.55 and 74,496.60

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Solution

The fourth proportional to 261,485.10, 392,219.55 and 74,496.60 is: 111,742.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,485.10 : 392,219.55 = 74,496.60 : x
  2. Step 2: Convert to fraction form
    261,485.10/392,219.55 = 74,496.60/x
  3. Step 3: Cross multiply
    261,485.10x = 392,219.55 × 74,496.60
  4. Step 4: Simplify right side
    261,485.10x = 29,219,022,928.53
  5. Step 5: Solve for x
    x = 29,219,022,928.53/261,485.10
  6. Step 6: Final answer
    x = 111,742.59

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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.