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Finding the Fourth Proportional to 250,012.71, 345,014.87 and 135,288.83

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Solution

The fourth proportional to 250,012.71, 345,014.87 and 135,288.83 is: 186,697.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,012.71 : 345,014.87 = 135,288.83 : x
  2. Step 2: Convert to fraction form
    250,012.71/345,014.87 = 135,288.83/x
  3. Step 3: Cross multiply
    250,012.71x = 345,014.87 × 135,288.83
  4. Step 4: Simplify right side
    250,012.71x = 46,676,658,281.00
  5. Step 5: Solve for x
    x = 46,676,658,281.00/250,012.71
  6. Step 6: Final answer
    x = 186,697.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.