Home / 400,930.81-553,284.47-239,785.83

Finding the Fourth Proportional to 400,930.81, 553,284.47 and 239,785.83

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Solution

The fourth proportional to 400,930.81, 553,284.47 and 239,785.83 is: 330,904.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,930.81 : 553,284.47 = 239,785.83 : x
  2. Step 2: Convert to fraction form
    400,930.81/553,284.47 = 239,785.83/x
  3. Step 3: Cross multiply
    400,930.81x = 553,284.47 × 239,785.83
  4. Step 4: Simplify right side
    400,930.81x = 132,669,774,666.13
  5. Step 5: Solve for x
    x = 132,669,774,666.13/400,930.81
  6. Step 6: Final answer
    x = 330,904.42

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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.