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Finding the Fourth Proportional to 170,859.20, 256,288.80 and 153,946.40

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Solution

The fourth proportional to 170,859.20, 256,288.80 and 153,946.40 is: 230,919.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,859.20 : 256,288.80 = 153,946.40 : x
  2. Step 2: Convert to fraction form
    170,859.20/256,288.80 = 153,946.40/x
  3. Step 3: Cross multiply
    170,859.20x = 256,288.80 × 153,946.40
  4. Step 4: Simplify right side
    170,859.20x = 39,454,738,120.32
  5. Step 5: Solve for x
    x = 39,454,738,120.32/170,859.20
  6. Step 6: Final answer
    x = 230,919.60

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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.