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Finding the Fourth Proportional to 517,285.15, 775,927.73 and 143,308.15

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Solution

The fourth proportional to 517,285.15, 775,927.73 and 143,308.15 is: 214,962.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,285.15 : 775,927.73 = 143,308.15 : x
  2. Step 2: Convert to fraction form
    517,285.15/775,927.73 = 143,308.15/x
  3. Step 3: Cross multiply
    517,285.15x = 775,927.73 × 143,308.15
  4. Step 4: Simplify right side
    517,285.15x = 111,196,766,803.46
  5. Step 5: Solve for x
    x = 111,196,766,803.46/517,285.15
  6. Step 6: Final answer
    x = 214,962.23

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Similar ratio
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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.