Home / 215,638.40-323,457.60-67,875.20

Finding the Fourth Proportional to 215,638.40, 323,457.60 and 67,875.20

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Solution

The fourth proportional to 215,638.40, 323,457.60 and 67,875.20 is: 101,812.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,638.40 : 323,457.60 = 67,875.20 : x
  2. Step 2: Convert to fraction form
    215,638.40/323,457.60 = 67,875.20/x
  3. Step 3: Cross multiply
    215,638.40x = 323,457.60 × 67,875.20
  4. Step 4: Simplify right side
    215,638.40x = 21,954,749,291.52
  5. Step 5: Solve for x
    x = 21,954,749,291.52/215,638.40
  6. Step 6: Final answer
    x = 101,812.80

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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.