Home / 272,869.32-409,284-85,934.28

Finding the Fourth Proportional to 272,869.32, 409,284 and 85,934.28

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Solution

The fourth proportional to 272,869.32, 409,284 and 85,934.28 is: 128,895.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,869.32 : 409,284 = 85,934.28 : x
  2. Step 2: Convert to fraction form
    272,869.32/409,284 = 85,934.28/x
  3. Step 3: Cross multiply
    272,869.32x = 409,284 × 85,934.28
  4. Step 4: Simplify right side
    272,869.32x = 35,171,525,855.52
  5. Step 5: Solve for x
    x = 35,171,525,855.52/272,869.32
  6. Step 6: Final answer
    x = 128,895.13

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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.