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Finding the Fourth Proportional to 255,083.20, 382,624.80 and 65,543.20

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Solution

The fourth proportional to 255,083.20, 382,624.80 and 65,543.20 is: 98,314.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,083.20 : 382,624.80 = 65,543.20 : x
  2. Step 2: Convert to fraction form
    255,083.20/382,624.80 = 65,543.20/x
  3. Step 3: Cross multiply
    255,083.20x = 382,624.80 × 65,543.20
  4. Step 4: Simplify right side
    255,083.20x = 25,078,453,791.36
  5. Step 5: Solve for x
    x = 25,078,453,791.36/255,083.20
  6. Step 6: Final answer
    x = 98,314.80

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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.