Home / 513,258.23-769,871.27-213,731.30

Finding the Fourth Proportional to 513,258.23, 769,871.27 and 213,731.30

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Solution

The fourth proportional to 513,258.23, 769,871.27 and 213,731.30 is: 320,590.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,258.23 : 769,871.27 = 213,731.30 : x
  2. Step 2: Convert to fraction form
    513,258.23/769,871.27 = 213,731.30/x
  3. Step 3: Cross multiply
    513,258.23x = 769,871.27 × 213,731.30
  4. Step 4: Simplify right side
    513,258.23x = 164,545,582,451.74
  5. Step 5: Solve for x
    x = 164,545,582,451.74/513,258.23
  6. Step 6: Final answer
    x = 320,590.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.