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Finding the Fourth Proportional to 257,271.60, 355,053.60 and 155,322.12

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Solution

The fourth proportional to 257,271.60, 355,053.60 and 155,322.12 is: 214,355.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,271.60 : 355,053.60 = 155,322.12 : x
  2. Step 2: Convert to fraction form
    257,271.60/355,053.60 = 155,322.12/x
  3. Step 3: Cross multiply
    257,271.60x = 355,053.60 × 155,322.12
  4. Step 4: Simplify right side
    257,271.60x = 55,147,677,865.63
  5. Step 5: Solve for x
    x = 55,147,677,865.63/257,271.60
  6. Step 6: Final answer
    x = 214,355.87

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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.