Home / 272,871.32-409,287-85,936.28

Finding the Fourth Proportional to 272,871.32, 409,287 and 85,936.28

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Solution

The fourth proportional to 272,871.32, 409,287 and 85,936.28 is: 128,898.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,871.32 : 409,287 = 85,936.28 : x
  2. Step 2: Convert to fraction form
    272,871.32/409,287 = 85,936.28/x
  3. Step 3: Cross multiply
    272,871.32x = 409,287 × 85,936.28
  4. Step 4: Simplify right side
    272,871.32x = 35,172,602,232.36
  5. Step 5: Solve for x
    x = 35,172,602,232.36/272,871.32
  6. Step 6: Final answer
    x = 128,898.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.