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Finding the Fourth Proportional to 240,527.79, 331,963.58 and 138,533.40

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Solution

The fourth proportional to 240,527.79, 331,963.58 and 138,533.40 is: 191,196.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,527.79 : 331,963.58 = 138,533.40 : x
  2. Step 2: Convert to fraction form
    240,527.79/331,963.58 = 138,533.40/x
  3. Step 3: Cross multiply
    240,527.79x = 331,963.58 × 138,533.40
  4. Step 4: Simplify right side
    240,527.79x = 45,988,043,759.91
  5. Step 5: Solve for x
    x = 45,988,043,759.91/240,527.79
  6. Step 6: Final answer
    x = 191,196.38

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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.