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Finding the Fourth Proportional to 255,645.48, 352,817.10 and 153,704.28

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Solution

The fourth proportional to 255,645.48, 352,817.10 and 153,704.28 is: 212,127.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,645.48 : 352,817.10 = 153,704.28 : x
  2. Step 2: Convert to fraction form
    255,645.48/352,817.10 = 153,704.28/x
  3. Step 3: Cross multiply
    255,645.48x = 352,817.10 × 153,704.28
  4. Step 4: Simplify right side
    255,645.48x = 54,229,498,327.19
  5. Step 5: Solve for x
    x = 54,229,498,327.19/255,645.48
  6. Step 6: Final answer
    x = 212,127.74

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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.