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Finding the Fourth Proportional to 370,243.20, 555,364.80 and 120,950.40

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Solution

The fourth proportional to 370,243.20, 555,364.80 and 120,950.40 is: 181,425.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,243.20 : 555,364.80 = 120,950.40 : x
  2. Step 2: Convert to fraction form
    370,243.20/555,364.80 = 120,950.40/x
  3. Step 3: Cross multiply
    370,243.20x = 555,364.80 × 120,950.40
  4. Step 4: Simplify right side
    370,243.20x = 67,171,594,705.92
  5. Step 5: Solve for x
    x = 67,171,594,705.92/370,243.20
  6. Step 6: Final answer
    x = 181,425.60

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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.