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Finding the Fourth Proportional to 306,643.08, 423,049.59 and 226,262.19

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Solution

The fourth proportional to 306,643.08, 423,049.59 and 226,262.19 is: 312,154.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,643.08 : 423,049.59 = 226,262.19 : x
  2. Step 2: Convert to fraction form
    306,643.08/423,049.59 = 226,262.19/x
  3. Step 3: Cross multiply
    306,643.08x = 423,049.59 × 226,262.19
  4. Step 4: Simplify right side
    306,643.08x = 95,720,126,712.00
  5. Step 5: Solve for x
    x = 95,720,126,712.00/306,643.08
  6. Step 6: Final answer
    x = 312,154.86

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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.