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Finding the Fourth Proportional to 266,430.70, 400,630.20 and 223,128.10

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Solution

The fourth proportional to 266,430.70, 400,630.20 and 223,128.10 is: 335,516.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,430.70 : 400,630.20 = 223,128.10 : x
  2. Step 2: Convert to fraction form
    266,430.70/400,630.20 = 223,128.10/x
  3. Step 3: Cross multiply
    266,430.70x = 400,630.20 × 223,128.10
  4. Step 4: Simplify right side
    266,430.70x = 89,391,855,328.62
  5. Step 5: Solve for x
    x = 89,391,855,328.62/266,430.70
  6. Step 6: Final answer
    x = 335,516.35

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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.