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Finding the Fourth Proportional to 203,426.49, 280,745.10 and 112,810.89

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Solution

The fourth proportional to 203,426.49, 280,745.10 and 112,810.89 is: 155,688.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,426.49 : 280,745.10 = 112,810.89 : x
  2. Step 2: Convert to fraction form
    203,426.49/280,745.10 = 112,810.89/x
  3. Step 3: Cross multiply
    203,426.49x = 280,745.10 × 112,810.89
  4. Step 4: Simplify right side
    203,426.49x = 31,671,104,594.14
  5. Step 5: Solve for x
    x = 31,671,104,594.14/203,426.49
  6. Step 6: Final answer
    x = 155,688.20

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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.