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Finding the Fourth Proportional to 257,272.60, 355,054.98 and 155,323.12

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Solution

The fourth proportional to 257,272.60, 355,054.98 and 155,323.12 is: 214,357.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,272.60 : 355,054.98 = 155,323.12 : x
  2. Step 2: Convert to fraction form
    257,272.60/355,054.98 = 155,323.12/x
  3. Step 3: Cross multiply
    257,272.60x = 355,054.98 × 155,323.12
  4. Step 4: Simplify right side
    257,272.60x = 55,148,247,265.14
  5. Step 5: Solve for x
    x = 55,148,247,265.14/257,272.60
  6. Step 6: Final answer
    x = 214,357.25

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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.