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Finding the Fourth Proportional to 306,077.10, 459,115.65 and 221,440.20

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Solution

The fourth proportional to 306,077.10, 459,115.65 and 221,440.20 is: 332,160.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,077.10 : 459,115.65 = 221,440.20 : x
  2. Step 2: Convert to fraction form
    306,077.10/459,115.65 = 221,440.20/x
  3. Step 3: Cross multiply
    306,077.10x = 459,115.65 × 221,440.20
  4. Step 4: Simplify right side
    306,077.10x = 101,666,661,359.13
  5. Step 5: Solve for x
    x = 101,666,661,359.13/306,077.10
  6. Step 6: Final answer
    x = 332,160.30

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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.