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Finding the Fourth Proportional to 201,490.16, 278,039.28 and 116,612.48

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Solution

The fourth proportional to 201,490.16, 278,039.28 and 116,612.48 is: 160,915.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,490.16 : 278,039.28 = 116,612.48 : x
  2. Step 2: Convert to fraction form
    201,490.16/278,039.28 = 116,612.48/x
  3. Step 3: Cross multiply
    201,490.16x = 278,039.28 × 116,612.48
  4. Step 4: Simplify right side
    201,490.16x = 32,422,849,978.21
  5. Step 5: Solve for x
    x = 32,422,849,978.21/201,490.16
  6. Step 6: Final answer
    x = 160,915.30

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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.