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Finding the Fourth Proportional to 225,262.90, 310,897.70 and 128,466.96

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Solution

The fourth proportional to 225,262.90, 310,897.70 and 128,466.96 is: 177,304.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,262.90 : 310,897.70 = 128,466.96 : x
  2. Step 2: Convert to fraction form
    225,262.90/310,897.70 = 128,466.96/x
  3. Step 3: Cross multiply
    225,262.90x = 310,897.70 × 128,466.96
  4. Step 4: Simplify right side
    225,262.90x = 39,940,082,389.99
  5. Step 5: Solve for x
    x = 39,940,082,389.99/225,262.90
  6. Step 6: Final answer
    x = 177,304.31

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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.