Home / 400,931.43-553,285.33-239,786.45

Finding the Fourth Proportional to 400,931.43, 553,285.33 and 239,786.45

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Solution

The fourth proportional to 400,931.43, 553,285.33 and 239,786.45 is: 330,905.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,931.43 : 553,285.33 = 239,786.45 : x
  2. Step 2: Convert to fraction form
    400,931.43/553,285.33 = 239,786.45/x
  3. Step 3: Cross multiply
    400,931.43x = 553,285.33 × 239,786.45
  4. Step 4: Simplify right side
    400,931.43x = 132,670,325,901.53
  5. Step 5: Solve for x
    x = 132,670,325,901.53/400,931.43
  6. Step 6: Final answer
    x = 330,905.28

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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.