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Finding the Fourth Proportional to 400,718.96, 552,992.10 and 219,430.88

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Solution

The fourth proportional to 400,718.96, 552,992.10 and 219,430.88 is: 302,814.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,718.96 : 552,992.10 = 219,430.88 : x
  2. Step 2: Convert to fraction form
    400,718.96/552,992.10 = 219,430.88/x
  3. Step 3: Cross multiply
    400,718.96x = 552,992.10 × 219,430.88
  4. Step 4: Simplify right side
    400,718.96x = 121,343,543,136.05
  5. Step 5: Solve for x
    x = 121,343,543,136.05/400,718.96
  6. Step 6: Final answer
    x = 302,814.58

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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.