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Finding the Fourth Proportional to 384,811.80, 576,051.30 and 290,722.20

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Solution

The fourth proportional to 384,811.80, 576,051.30 and 290,722.20 is: 435,202.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,811.80 : 576,051.30 = 290,722.20 : x
  2. Step 2: Convert to fraction form
    384,811.80/576,051.30 = 290,722.20/x
  3. Step 3: Cross multiply
    384,811.80x = 576,051.30 × 290,722.20
  4. Step 4: Simplify right side
    384,811.80x = 167,470,901,248.86
  5. Step 5: Solve for x
    x = 167,470,901,248.86/384,811.80
  6. Step 6: Final answer
    x = 435,202.09

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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.