Home / 369,939.40-554,909.10-120,621.40

Finding the Fourth Proportional to 369,939.40, 554,909.10 and 120,621.40

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Solution

The fourth proportional to 369,939.40, 554,909.10 and 120,621.40 is: 180,932.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,939.40 : 554,909.10 = 120,621.40 : x
  2. Step 2: Convert to fraction form
    369,939.40/554,909.10 = 120,621.40/x
  3. Step 3: Cross multiply
    369,939.40x = 554,909.10 × 120,621.40
  4. Step 4: Simplify right side
    369,939.40x = 66,933,912,514.74
  5. Step 5: Solve for x
    x = 66,933,912,514.74/369,939.40
  6. Step 6: Final answer
    x = 180,932.10

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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.