Home / 437,974.36-656,904.74-138,485.16

Finding the Fourth Proportional to 437,974.36, 656,904.74 and 138,485.16

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Solution

The fourth proportional to 437,974.36, 656,904.74 and 138,485.16 is: 207,709.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,974.36 : 656,904.74 = 138,485.16 : x
  2. Step 2: Convert to fraction form
    437,974.36/656,904.74 = 138,485.16/x
  3. Step 3: Cross multiply
    437,974.36x = 656,904.74 × 138,485.16
  4. Step 4: Simplify right side
    437,974.36x = 90,971,557,331.23
  5. Step 5: Solve for x
    x = 90,971,557,331.23/437,974.36
  6. Step 6: Final answer
    x = 207,709.78

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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.