Home / 230,538.18-318,144.06-128,570.07

Finding the Fourth Proportional to 230,538.18, 318,144.06 and 128,570.07

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Solution

The fourth proportional to 230,538.18, 318,144.06 and 128,570.07 is: 177,427.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,538.18 : 318,144.06 = 128,570.07 : x
  2. Step 2: Convert to fraction form
    230,538.18/318,144.06 = 128,570.07/x
  3. Step 3: Cross multiply
    230,538.18x = 318,144.06 × 128,570.07
  4. Step 4: Simplify right side
    230,538.18x = 40,903,804,064.28
  5. Step 5: Solve for x
    x = 40,903,804,064.28/230,538.18
  6. Step 6: Final answer
    x = 177,427.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.