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Finding the Fourth Proportional to 369,739.32, 554,609 and 120,421.32

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Solution

The fourth proportional to 369,739.32, 554,609 and 120,421.32 is: 180,631.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,739.32 : 554,609 = 120,421.32 : x
  2. Step 2: Convert to fraction form
    369,739.32/554,609 = 120,421.32/x
  3. Step 3: Cross multiply
    369,739.32x = 554,609 × 120,421.32
  4. Step 4: Simplify right side
    369,739.32x = 66,786,747,863.88
  5. Step 5: Solve for x
    x = 66,786,747,863.88/369,739.32
  6. Step 6: Final answer
    x = 180,631.99

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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.