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Finding the Fourth Proportional to 370,203.69, 555,305.54 and 89,720.94

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Solution

The fourth proportional to 370,203.69, 555,305.54 and 89,720.94 is: 134,581.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,203.69 : 555,305.54 = 89,720.94 : x
  2. Step 2: Convert to fraction form
    370,203.69/555,305.54 = 89,720.94/x
  3. Step 3: Cross multiply
    370,203.69x = 555,305.54 × 89,720.94
  4. Step 4: Simplify right side
    370,203.69x = 49,822,537,342.71
  5. Step 5: Solve for x
    x = 49,822,537,342.71/370,203.69
  6. Step 6: Final answer
    x = 134,581.42

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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.