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Finding the Fourth Proportional to 216,342.30, 298,548 and 131,486.70

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Solution

The fourth proportional to 216,342.30, 298,548 and 131,486.70 is: 181,448.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,342.30 : 298,548 = 131,486.70 : x
  2. Step 2: Convert to fraction form
    216,342.30/298,548 = 131,486.70/x
  3. Step 3: Cross multiply
    216,342.30x = 298,548 × 131,486.70
  4. Step 4: Simplify right side
    216,342.30x = 39,255,091,311.60
  5. Step 5: Solve for x
    x = 39,255,091,311.60/216,342.30
  6. Step 6: Final answer
    x = 181,448.99

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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.