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Finding the Fourth Proportional to 384,415.20, 576,622.80 and 343,080.90

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Solution

The fourth proportional to 384,415.20, 576,622.80 and 343,080.90 is: 514,621.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,415.20 : 576,622.80 = 343,080.90 : x
  2. Step 2: Convert to fraction form
    384,415.20/576,622.80 = 343,080.90/x
  3. Step 3: Cross multiply
    384,415.20x = 576,622.80 × 343,080.90
  4. Step 4: Simplify right side
    384,415.20x = 197,828,269,184.52
  5. Step 5: Solve for x
    x = 197,828,269,184.52/384,415.20
  6. Step 6: Final answer
    x = 514,621.35

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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.