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Finding the Fourth Proportional to 403,700.46, 557,107.15 and 219,938.12

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Solution

The fourth proportional to 403,700.46, 557,107.15 and 219,938.12 is: 303,514.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,700.46 : 557,107.15 = 219,938.12 : x
  2. Step 2: Convert to fraction form
    403,700.46/557,107.15 = 219,938.12/x
  3. Step 3: Cross multiply
    403,700.46x = 557,107.15 × 219,938.12
  4. Step 4: Simplify right side
    403,700.46x = 122,529,101,653.87
  5. Step 5: Solve for x
    x = 122,529,101,653.87/403,700.46
  6. Step 6: Final answer
    x = 303,514.90

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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.