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Finding the Fourth Proportional to 370,203.89, 555,305.82 and 89,721.14

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Solution

The fourth proportional to 370,203.89, 555,305.82 and 89,721.14 is: 134,581.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,203.89 : 555,305.82 = 89,721.14 : x
  2. Step 2: Convert to fraction form
    370,203.89/555,305.82 = 89,721.14/x
  3. Step 3: Cross multiply
    370,203.89x = 555,305.82 × 89,721.14
  4. Step 4: Simplify right side
    370,203.89x = 49,822,668,106.05
  5. Step 5: Solve for x
    x = 49,822,668,106.05/370,203.89
  6. Step 6: Final answer
    x = 134,581.70

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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.