Home / 215,386.21-323,127.50-65,638.23

Finding the Fourth Proportional to 215,386.21, 323,127.50 and 65,638.23

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Solution

The fourth proportional to 215,386.21, 323,127.50 and 65,638.23 is: 98,472.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,386.21 : 323,127.50 = 65,638.23 : x
  2. Step 2: Convert to fraction form
    215,386.21/323,127.50 = 65,638.23/x
  3. Step 3: Cross multiply
    215,386.21x = 323,127.50 × 65,638.23
  4. Step 4: Simplify right side
    215,386.21x = 21,209,517,164.33
  5. Step 5: Solve for x
    x = 21,209,517,164.33/215,386.21
  6. Step 6: Final answer
    x = 98,472.03

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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.