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Finding the Fourth Proportional to 254,455.70, 381,683.55 and 170,256.20

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Solution

The fourth proportional to 254,455.70, 381,683.55 and 170,256.20 is: 255,384.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,455.70 : 381,683.55 = 170,256.20 : x
  2. Step 2: Convert to fraction form
    254,455.70/381,683.55 = 170,256.20/x
  3. Step 3: Cross multiply
    254,455.70x = 381,683.55 × 170,256.20
  4. Step 4: Simplify right side
    254,455.70x = 64,983,990,825.51
  5. Step 5: Solve for x
    x = 64,983,990,825.51/254,455.70
  6. Step 6: Final answer
    x = 255,384.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.