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Finding the Fourth Proportional to 438,418.80, 657,628.20 and 122,834.70

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Solution

The fourth proportional to 438,418.80, 657,628.20 and 122,834.70 is: 184,252.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,418.80 : 657,628.20 = 122,834.70 : x
  2. Step 2: Convert to fraction form
    438,418.80/657,628.20 = 122,834.70/x
  3. Step 3: Cross multiply
    438,418.80x = 657,628.20 × 122,834.70
  4. Step 4: Simplify right side
    438,418.80x = 80,779,562,658.54
  5. Step 5: Solve for x
    x = 80,779,562,658.54/438,418.80
  6. Step 6: Final answer
    x = 184,252.05

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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.