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Finding the Fourth Proportional to 402,198.52, 555,009.42 and 220,875.16

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Solution

The fourth proportional to 402,198.52, 555,009.42 and 220,875.16 is: 304,794.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,198.52 : 555,009.42 = 220,875.16 : x
  2. Step 2: Convert to fraction form
    402,198.52/555,009.42 = 220,875.16/x
  3. Step 3: Cross multiply
    402,198.52x = 555,009.42 × 220,875.16
  4. Step 4: Simplify right side
    402,198.52x = 122,587,794,444.01
  5. Step 5: Solve for x
    x = 122,587,794,444.01/402,198.52
  6. Step 6: Final answer
    x = 304,794.25

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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.