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Finding the Fourth Proportional to 384,810.80, 577,216.20 and 135,460.40

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Solution

The fourth proportional to 384,810.80, 577,216.20 and 135,460.40 is: 203,190.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,810.80 : 577,216.20 = 135,460.40 : x
  2. Step 2: Convert to fraction form
    384,810.80/577,216.20 = 135,460.40/x
  3. Step 3: Cross multiply
    384,810.80x = 577,216.20 × 135,460.40
  4. Step 4: Simplify right side
    384,810.80x = 78,189,937,338.48
  5. Step 5: Solve for x
    x = 78,189,937,338.48/384,810.80
  6. Step 6: Final answer
    x = 203,190.60

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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.