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Finding the Fourth Proportional to 375,471.24, 518,139.62 and 220,420.04

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Solution

The fourth proportional to 375,471.24, 518,139.62 and 220,420.04 is: 304,173.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,471.24 : 518,139.62 = 220,420.04 : x
  2. Step 2: Convert to fraction form
    375,471.24/518,139.62 = 220,420.04/x
  3. Step 3: Cross multiply
    375,471.24x = 518,139.62 × 220,420.04
  4. Step 4: Simplify right side
    375,471.24x = 114,208,352,899.76
  5. Step 5: Solve for x
    x = 114,208,352,899.76/375,471.24
  6. Step 6: Final answer
    x = 304,173.37

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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.