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Finding the Fourth Proportional to 413,655.60, 620,598.60 and 203,300.40

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Solution

The fourth proportional to 413,655.60, 620,598.60 and 203,300.40 is: 305,007.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,655.60 : 620,598.60 = 203,300.40 : x
  2. Step 2: Convert to fraction form
    413,655.60/620,598.60 = 203,300.40/x
  3. Step 3: Cross multiply
    413,655.60x = 620,598.60 × 203,300.40
  4. Step 4: Simplify right side
    413,655.60x = 126,167,943,619.44
  5. Step 5: Solve for x
    x = 126,167,943,619.44/413,655.60
  6. Step 6: Final answer
    x = 305,007.22

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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.