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Finding the Fourth Proportional to 254,015.40, 355,155 and 254,015.40

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Solution

The fourth proportional to 254,015.40, 355,155 and 254,015.40 is: 355,155

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,015.40 : 355,155 = 254,015.40 : x
  2. Step 2: Convert to fraction form
    254,015.40/355,155 = 254,015.40/x
  3. Step 3: Cross multiply
    254,015.40x = 355,155 × 254,015.40
  4. Step 4: Simplify right side
    254,015.40x = 90,214,839,387
  5. Step 5: Solve for x
    x = 90,214,839,387/254,015.40
  6. Step 6: Final answer
    x = 355,155

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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.