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Finding the Fourth Proportional to 611,344.70, 916,722.09 and 256,263.38

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Solution

The fourth proportional to 611,344.70, 916,722.09 and 256,263.38 is: 384,271.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,344.70 : 916,722.09 = 256,263.38 : x
  2. Step 2: Convert to fraction form
    611,344.70/916,722.09 = 256,263.38/x
  3. Step 3: Cross multiply
    611,344.70x = 916,722.09 × 256,263.38
  4. Step 4: Simplify right side
    611,344.70x = 234,922,301,304.06
  5. Step 5: Solve for x
    x = 234,922,301,304.06/611,344.70
  6. Step 6: Final answer
    x = 384,271.43

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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.