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Finding the Fourth Proportional to 370,816.20, 556,151.40 and 121,498.20

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Solution

The fourth proportional to 370,816.20, 556,151.40 and 121,498.20 is: 182,223.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,816.20 : 556,151.40 = 121,498.20 : x
  2. Step 2: Convert to fraction form
    370,816.20/556,151.40 = 121,498.20/x
  3. Step 3: Cross multiply
    370,816.20x = 556,151.40 × 121,498.20
  4. Step 4: Simplify right side
    370,816.20x = 67,571,394,027.48
  5. Step 5: Solve for x
    x = 67,571,394,027.48/370,816.20
  6. Step 6: Final answer
    x = 182,223.41

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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.