Home / 238,297.03-328,848.71-129,400.40

Finding the Fourth Proportional to 238,297.03, 328,848.71 and 129,400.40

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Solution

The fourth proportional to 238,297.03, 328,848.71 and 129,400.40 is: 178,571.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,297.03 : 328,848.71 = 129,400.40 : x
  2. Step 2: Convert to fraction form
    238,297.03/328,848.71 = 129,400.40/x
  3. Step 3: Cross multiply
    238,297.03x = 328,848.71 × 129,400.40
  4. Step 4: Simplify right side
    238,297.03x = 42,553,154,936.99
  5. Step 5: Solve for x
    x = 42,553,154,936.99/238,297.03
  6. Step 6: Final answer
    x = 178,571.90

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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.