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Finding the Fourth Proportional to 255,638.20, 352,806.96 and 153,696.88

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Solution

The fourth proportional to 255,638.20, 352,806.96 and 153,696.88 is: 212,117.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,638.20 : 352,806.96 = 153,696.88 : x
  2. Step 2: Convert to fraction form
    255,638.20/352,806.96 = 153,696.88/x
  3. Step 3: Cross multiply
    255,638.20x = 352,806.96 × 153,696.88
  4. Step 4: Simplify right side
    255,638.20x = 54,225,328,994.28
  5. Step 5: Solve for x
    x = 54,225,328,994.28/255,638.20
  6. Step 6: Final answer
    x = 212,117.47

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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.