Home / 400,916.63-553,278.72-219,628.51

Finding the Fourth Proportional to 400,916.63, 553,278.72 and 219,628.51

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Solution

The fourth proportional to 400,916.63, 553,278.72 and 219,628.51 is: 303,094.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,916.63 : 553,278.72 = 219,628.51 : x
  2. Step 2: Convert to fraction form
    400,916.63/553,278.72 = 219,628.51/x
  3. Step 3: Cross multiply
    400,916.63x = 553,278.72 × 219,628.51
  4. Step 4: Simplify right side
    400,916.63x = 121,515,780,328.72
  5. Step 5: Solve for x
    x = 121,515,780,328.72/400,916.63
  6. Step 6: Final answer
    x = 303,094.88

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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.