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Finding the Fourth Proportional to 370,609.97, 555,914.95 and 90,124.79

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Solution

The fourth proportional to 370,609.97, 555,914.95 and 90,124.79 is: 135,187.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,609.97 : 555,914.95 = 90,124.79 : x
  2. Step 2: Convert to fraction form
    370,609.97/555,914.95 = 90,124.79/x
  3. Step 3: Cross multiply
    370,609.97x = 555,914.95 × 90,124.79
  4. Step 4: Simplify right side
    370,609.97x = 50,101,715,121.72
  5. Step 5: Solve for x
    x = 50,101,715,121.72/370,609.97
  6. Step 6: Final answer
    x = 135,187.18

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1.5x scale

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.