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Finding the Fourth Proportional to 257,001.32, 385,455.54 and 69,969.08

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Solution

The fourth proportional to 257,001.32, 385,455.54 and 69,969.08 is: 104,940.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,001.32 : 385,455.54 = 69,969.08 : x
  2. Step 2: Convert to fraction form
    257,001.32/385,455.54 = 69,969.08/x
  3. Step 3: Cross multiply
    257,001.32x = 385,455.54 × 69,969.08
  4. Step 4: Simplify right side
    257,001.32x = 26,969,969,514.70
  5. Step 5: Solve for x
    x = 26,969,969,514.70/257,001.32
  6. Step 6: Final answer
    x = 104,940.98

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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.