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Finding the Fourth Proportional to 356,055.01, 491,413.13 and 203,143.07

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Solution

The fourth proportional to 356,055.01, 491,413.13 and 203,143.07 is: 280,370.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,055.01 : 491,413.13 = 203,143.07 : x
  2. Step 2: Convert to fraction form
    356,055.01/491,413.13 = 203,143.07/x
  3. Step 3: Cross multiply
    356,055.01x = 491,413.13 × 203,143.07
  4. Step 4: Simplify right side
    356,055.01x = 99,827,172,841.11
  5. Step 5: Solve for x
    x = 99,827,172,841.11/356,055.01
  6. Step 6: Final answer
    x = 280,370.09

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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.