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Finding the Fourth Proportional to 256,869.45, 360,404.55 and 256,869.45

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Solution

The fourth proportional to 256,869.45, 360,404.55 and 256,869.45 is: 360,404.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,869.45 : 360,404.55 = 256,869.45 : x
  2. Step 2: Convert to fraction form
    256,869.45/360,404.55 = 256,869.45/x
  3. Step 3: Cross multiply
    256,869.45x = 360,404.55 × 256,869.45
  4. Step 4: Simplify right side
    256,869.45x = 92,576,918,536.00
  5. Step 5: Solve for x
    x = 92,576,918,536.00/256,869.45
  6. Step 6: Final answer
    x = 360,404.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.