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Finding the Fourth Proportional to 201,721.32, 277,862.76 and 153,891.64

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Solution

The fourth proportional to 201,721.32, 277,862.76 and 153,891.64 is: 211,979.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,721.32 : 277,862.76 = 153,891.64 : x
  2. Step 2: Convert to fraction form
    201,721.32/277,862.76 = 153,891.64/x
  3. Step 3: Cross multiply
    201,721.32x = 277,862.76 × 153,891.64
  4. Step 4: Simplify right side
    201,721.32x = 42,760,755,831.33
  5. Step 5: Solve for x
    x = 42,760,755,831.33/201,721.32
  6. Step 6: Final answer
    x = 211,979.36

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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.