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Finding the Fourth Proportional to 255,640.46, 352,810.20 and 153,699.26

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Solution

The fourth proportional to 255,640.46, 352,810.20 and 153,699.26 is: 212,120.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,640.46 : 352,810.20 = 153,699.26 : x
  2. Step 2: Convert to fraction form
    255,640.46/352,810.20 = 153,699.26/x
  3. Step 3: Cross multiply
    255,640.46x = 352,810.20 × 153,699.26
  4. Step 4: Simplify right side
    255,640.46x = 54,226,666,660.45
  5. Step 5: Solve for x
    x = 54,226,666,660.45/255,640.46
  6. Step 6: Final answer
    x = 212,120.83

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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.