Home / 385,263.10-577,896.45-135,945.10

Finding the Fourth Proportional to 385,263.10, 577,896.45 and 135,945.10

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Solution

The fourth proportional to 385,263.10, 577,896.45 and 135,945.10 is: 203,918.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,263.10 : 577,896.45 = 135,945.10 : x
  2. Step 2: Convert to fraction form
    385,263.10/577,896.45 = 135,945.10/x
  3. Step 3: Cross multiply
    385,263.10x = 577,896.45 × 135,945.10
  4. Step 4: Simplify right side
    385,263.10x = 78,562,190,684.90
  5. Step 5: Solve for x
    x = 78,562,190,684.90/385,263.10
  6. Step 6: Final answer
    x = 203,918.29

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Double scale
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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.