Home / 289,017.18-398,980.08-217,424.52

Finding the Fourth Proportional to 289,017.18, 398,980.08 and 217,424.52

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Solution

The fourth proportional to 289,017.18, 398,980.08 and 217,424.52 is: 300,148.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,017.18 : 398,980.08 = 217,424.52 : x
  2. Step 2: Convert to fraction form
    289,017.18/398,980.08 = 217,424.52/x
  3. Step 3: Cross multiply
    289,017.18x = 398,980.08 × 217,424.52
  4. Step 4: Simplify right side
    289,017.18x = 86,748,052,383.56
  5. Step 5: Solve for x
    x = 86,748,052,383.56/289,017.18
  6. Step 6: Final answer
    x = 300,148.43

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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.