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Finding the Fourth Proportional to 427,700.15, 590,205.17 and 243,945.98

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Solution

The fourth proportional to 427,700.15, 590,205.17 and 243,945.98 is: 336,633.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,700.15 : 590,205.17 = 243,945.98 : x
  2. Step 2: Convert to fraction form
    427,700.15/590,205.17 = 243,945.98/x
  3. Step 3: Cross multiply
    427,700.15x = 590,205.17 × 243,945.98
  4. Step 4: Simplify right side
    427,700.15x = 143,978,174,425.96
  5. Step 5: Solve for x
    x = 143,978,174,425.96/427,700.15
  6. Step 6: Final answer
    x = 336,633.45

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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.