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Finding the Fourth Proportional to 402,473.68, 555,413.28 and 221,197.24

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Solution

The fourth proportional to 402,473.68, 555,413.28 and 221,197.24 is: 305,251.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,473.68 : 555,413.28 = 221,197.24 : x
  2. Step 2: Convert to fraction form
    402,473.68/555,413.28 = 221,197.24/x
  3. Step 3: Cross multiply
    402,473.68x = 555,413.28 × 221,197.24
  4. Step 4: Simplify right side
    402,473.68x = 122,855,884,595.35
  5. Step 5: Solve for x
    x = 122,855,884,595.35/402,473.68
  6. Step 6: Final answer
    x = 305,251.97

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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.