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Finding the Fourth Proportional to 400,711.67, 552,988.91 and 219,420.71

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Solution

The fourth proportional to 400,711.67, 552,988.91 and 219,420.71 is: 302,804.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,711.67 : 552,988.91 = 219,420.71 : x
  2. Step 2: Convert to fraction form
    400,711.67/552,988.91 = 219,420.71/x
  3. Step 3: Cross multiply
    400,711.67x = 552,988.91 × 219,420.71
  4. Step 4: Simplify right side
    400,711.67x = 121,337,218,157.22
  5. Step 5: Solve for x
    x = 121,337,218,157.22/400,711.67
  6. Step 6: Final answer
    x = 302,804.30

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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.