Home / 420,228.31-579,913.86-229,240.34

Finding the Fourth Proportional to 420,228.31, 579,913.86 and 229,240.34

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Solution

The fourth proportional to 420,228.31, 579,913.86 and 229,240.34 is: 316,351.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,228.31 : 579,913.86 = 229,240.34 : x
  2. Step 2: Convert to fraction form
    420,228.31/579,913.86 = 229,240.34/x
  3. Step 3: Cross multiply
    420,228.31x = 579,913.86 × 229,240.34
  4. Step 4: Simplify right side
    420,228.31x = 132,939,650,437.11
  5. Step 5: Solve for x
    x = 132,939,650,437.11/420,228.31
  6. Step 6: Final answer
    x = 316,351.01

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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.