Home / 390,060.54-584,612.10-221,721.84

Finding the Fourth Proportional to 390,060.54, 584,612.10 and 221,721.84

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Solution

The fourth proportional to 390,060.54, 584,612.10 and 221,721.84 is: 332,310.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,060.54 : 584,612.10 = 221,721.84 : x
  2. Step 2: Convert to fraction form
    390,060.54/584,612.10 = 221,721.84/x
  3. Step 3: Cross multiply
    390,060.54x = 584,612.10 × 221,721.84
  4. Step 4: Simplify right side
    390,060.54x = 129,621,270,498.26
  5. Step 5: Solve for x
    x = 129,621,270,498.26/390,060.54
  6. Step 6: Final answer
    x = 332,310.65

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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.