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Finding the Fourth Proportional to 257,594.82, 355,279.95 and 155,513.58

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Solution

The fourth proportional to 257,594.82, 355,279.95 and 155,513.58 is: 214,487.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,594.82 : 355,279.95 = 155,513.58 : x
  2. Step 2: Convert to fraction form
    257,594.82/355,279.95 = 155,513.58/x
  3. Step 3: Cross multiply
    257,594.82x = 355,279.95 × 155,513.58
  4. Step 4: Simplify right side
    257,594.82x = 55,250,856,926.72
  5. Step 5: Solve for x
    x = 55,250,856,926.72/257,594.82
  6. Step 6: Final answer
    x = 214,487.45

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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.