Home / 385,080.08-577,581.56-118,768.40

Finding the Fourth Proportional to 385,080.08, 577,581.56 and 118,768.40

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Solution

The fourth proportional to 385,080.08, 577,581.56 and 118,768.40 is: 178,140.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,080.08 : 577,581.56 = 118,768.40 : x
  2. Step 2: Convert to fraction form
    385,080.08/577,581.56 = 118,768.40/x
  3. Step 3: Cross multiply
    385,080.08x = 577,581.56 × 118,768.40
  4. Step 4: Simplify right side
    385,080.08x = 68,598,437,750.70
  5. Step 5: Solve for x
    x = 68,598,437,750.70/385,080.08
  6. Step 6: Final answer
    x = 178,140.71

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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.