Home / 400,741.65-553,019.54-216,979.33

Finding the Fourth Proportional to 400,741.65, 553,019.54 and 216,979.33

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Solution

The fourth proportional to 400,741.65, 553,019.54 and 216,979.33 is: 299,429.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,741.65 : 553,019.54 = 216,979.33 : x
  2. Step 2: Convert to fraction form
    400,741.65/553,019.54 = 216,979.33/x
  3. Step 3: Cross multiply
    400,741.65x = 553,019.54 × 216,979.33
  4. Step 4: Simplify right side
    400,741.65x = 119,993,805,416.11
  5. Step 5: Solve for x
    x = 119,993,805,416.11/400,741.65
  6. Step 6: Final answer
    x = 299,429.33

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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.