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Finding the Fourth Proportional to 517,437.25, 776,155.92 and 143,460.25

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Solution

The fourth proportional to 517,437.25, 776,155.92 and 143,460.25 is: 215,190.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,437.25 : 776,155.92 = 143,460.25 : x
  2. Step 2: Convert to fraction form
    517,437.25/776,155.92 = 143,460.25/x
  3. Step 3: Cross multiply
    517,437.25x = 776,155.92 × 143,460.25
  4. Step 4: Simplify right side
    517,437.25x = 111,347,522,322.18
  5. Step 5: Solve for x
    x = 111,347,522,322.18/517,437.25
  6. Step 6: Final answer
    x = 215,190.39

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Double scale
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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.