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Finding the Fourth Proportional to 255,422.72, 382,740.18 and 161,731.64

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Solution

The fourth proportional to 255,422.72, 382,740.18 and 161,731.64 is: 242,348.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,422.72 : 382,740.18 = 161,731.64 : x
  2. Step 2: Convert to fraction form
    255,422.72/382,740.18 = 161,731.64/x
  3. Step 3: Cross multiply
    255,422.72x = 382,740.18 × 161,731.64
  4. Step 4: Simplify right side
    255,422.72x = 61,901,197,005.30
  5. Step 5: Solve for x
    x = 61,901,197,005.30/255,422.72
  6. Step 6: Final answer
    x = 242,348.05

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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.