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Finding the Fourth Proportional to 315,545.36, 435,451.56 and 188,226.32

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Solution

The fourth proportional to 315,545.36, 435,451.56 and 188,226.32 is: 259,751.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,545.36 : 435,451.56 = 188,226.32 : x
  2. Step 2: Convert to fraction form
    315,545.36/435,451.56 = 188,226.32/x
  3. Step 3: Cross multiply
    315,545.36x = 435,451.56 × 188,226.32
  4. Step 4: Simplify right side
    315,545.36x = 81,963,444,677.06
  5. Step 5: Solve for x
    x = 81,963,444,677.06/315,545.36
  6. Step 6: Final answer
    x = 259,751.70

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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.