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Finding the Fourth Proportional to 257,253.60, 355,028.76 and 155,304.12

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Solution

The fourth proportional to 257,253.60, 355,028.76 and 155,304.12 is: 214,331.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,253.60 : 355,028.76 = 155,304.12 : x
  2. Step 2: Convert to fraction form
    257,253.60/355,028.76 = 155,304.12/x
  3. Step 3: Cross multiply
    257,253.60x = 355,028.76 × 155,304.12
  4. Step 4: Simplify right side
    257,253.60x = 55,137,429,146.49
  5. Step 5: Solve for x
    x = 55,137,429,146.49/257,253.60
  6. Step 6: Final answer
    x = 214,331.03

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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.