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Finding the Fourth Proportional to 315,095.31, 434,831.49 and 171,855.36

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Solution

The fourth proportional to 315,095.31, 434,831.49 and 171,855.36 is: 237,160.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,095.31 : 434,831.49 = 171,855.36 : x
  2. Step 2: Convert to fraction form
    315,095.31/434,831.49 = 171,855.36/x
  3. Step 3: Cross multiply
    315,095.31x = 434,831.49 × 171,855.36
  4. Step 4: Simplify right side
    315,095.31x = 74,728,122,253.29
  5. Step 5: Solve for x
    x = 74,728,122,253.29/315,095.31
  6. Step 6: Final answer
    x = 237,160.38

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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.