Home / 236,821.38-326,809.64-129,389.10

Finding the Fourth Proportional to 236,821.38, 326,809.64 and 129,389.10

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Solution

The fourth proportional to 236,821.38, 326,809.64 and 129,389.10 is: 178,554.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,821.38 : 326,809.64 = 129,389.10 : x
  2. Step 2: Convert to fraction form
    236,821.38/326,809.64 = 129,389.10/x
  3. Step 3: Cross multiply
    236,821.38x = 326,809.64 × 129,389.10
  4. Step 4: Simplify right side
    236,821.38x = 42,285,605,514.40
  5. Step 5: Solve for x
    x = 42,285,605,514.40/236,821.38
  6. Step 6: Final answer
    x = 178,554.85

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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.