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Finding the Fourth Proportional to 216,679.88, 324,971.76 and 157,543.40

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Solution

The fourth proportional to 216,679.88, 324,971.76 and 157,543.40 is: 236,280.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,679.88 : 324,971.76 = 157,543.40 : x
  2. Step 2: Convert to fraction form
    216,679.88/324,971.76 = 157,543.40/x
  3. Step 3: Cross multiply
    216,679.88x = 324,971.76 × 157,543.40
  4. Step 4: Simplify right side
    216,679.88x = 51,197,155,974.38
  5. Step 5: Solve for x
    x = 51,197,155,974.38/216,679.88
  6. Step 6: Final answer
    x = 236,280.16

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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.