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Finding the Fourth Proportional to 216,945.20, 291,942.90 and 216,945.20

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Solution

The fourth proportional to 216,945.20, 291,942.90 and 216,945.20 is: 291,942.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,945.20 : 291,942.90 = 216,945.20 : x
  2. Step 2: Convert to fraction form
    216,945.20/291,942.90 = 216,945.20/x
  3. Step 3: Cross multiply
    216,945.20x = 291,942.90 × 216,945.20
  4. Step 4: Simplify right side
    216,945.20x = 63,335,610,829.08
  5. Step 5: Solve for x
    x = 63,335,610,829.08/216,945.20
  6. Step 6: Final answer
    x = 291,942.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.