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Finding the Fourth Proportional to 216,687.84, 298,967.10 and 124,790.10

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Solution

The fourth proportional to 216,687.84, 298,967.10 and 124,790.10 is: 172,174.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,687.84 : 298,967.10 = 124,790.10 : x
  2. Step 2: Convert to fraction form
    216,687.84/298,967.10 = 124,790.10/x
  3. Step 3: Cross multiply
    216,687.84x = 298,967.10 × 124,790.10
  4. Step 4: Simplify right side
    216,687.84x = 37,308,134,305.71
  5. Step 5: Solve for x
    x = 37,308,134,305.71/216,687.84
  6. Step 6: Final answer
    x = 172,174.56

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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.