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Finding the Fourth Proportional to 257,808.64, 355,770.56 and 143,080.62

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Solution

The fourth proportional to 257,808.64, 355,770.56 and 143,080.62 is: 197,448.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,808.64 : 355,770.56 = 143,080.62 : x
  2. Step 2: Convert to fraction form
    257,808.64/355,770.56 = 143,080.62/x
  3. Step 3: Cross multiply
    257,808.64x = 355,770.56 × 143,080.62
  4. Step 4: Simplify right side
    257,808.64x = 50,903,872,302.55
  5. Step 5: Solve for x
    x = 50,903,872,302.55/257,808.64
  6. Step 6: Final answer
    x = 197,448.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.