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Finding the Fourth Proportional to 413,699.40, 620,221.05 and 226,710.90

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Solution

The fourth proportional to 413,699.40, 620,221.05 and 226,710.90 is: 339,886.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,699.40 : 620,221.05 = 226,710.90 : x
  2. Step 2: Convert to fraction form
    413,699.40/620,221.05 = 226,710.90/x
  3. Step 3: Cross multiply
    413,699.40x = 620,221.05 × 226,710.90
  4. Step 4: Simplify right side
    413,699.40x = 140,610,872,444.45
  5. Step 5: Solve for x
    x = 140,610,872,444.45/413,699.40
  6. Step 6: Final answer
    x = 339,886.58

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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.