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Finding the Fourth Proportional to 470,384.10, 705,576.15 and 221,552.10

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Solution

The fourth proportional to 470,384.10, 705,576.15 and 221,552.10 is: 332,328.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,384.10 : 705,576.15 = 221,552.10 : x
  2. Step 2: Convert to fraction form
    470,384.10/705,576.15 = 221,552.10/x
  3. Step 3: Cross multiply
    470,384.10x = 705,576.15 × 221,552.10
  4. Step 4: Simplify right side
    470,384.10x = 156,321,877,742.42
  5. Step 5: Solve for x
    x = 156,321,877,742.42/470,384.10
  6. Step 6: Final answer
    x = 332,328.15

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Similar ratio
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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.