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Finding the Fourth Proportional to 611,497.48, 916,311.06 and 256,317.88

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Solution

The fourth proportional to 611,497.48, 916,311.06 and 256,317.88 is: 384,084.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,497.48 : 916,311.06 = 256,317.88 : x
  2. Step 2: Convert to fraction form
    611,497.48/916,311.06 = 256,317.88/x
  3. Step 3: Cross multiply
    611,497.48x = 916,311.06 × 256,317.88
  4. Step 4: Simplify right side
    611,497.48x = 234,866,908,319.75
  5. Step 5: Solve for x
    x = 234,866,908,319.75/611,497.48
  6. Step 6: Final answer
    x = 384,084.83

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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.