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Finding the Fourth Proportional to 282,808.60, 390,165.44 and 161,885.26

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Solution

The fourth proportional to 282,808.60, 390,165.44 and 161,885.26 is: 223,338.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,808.60 : 390,165.44 = 161,885.26 : x
  2. Step 2: Convert to fraction form
    282,808.60/390,165.44 = 161,885.26/x
  3. Step 3: Cross multiply
    282,808.60x = 390,165.44 × 161,885.26
  4. Step 4: Simplify right side
    282,808.60x = 63,162,033,375.69
  5. Step 5: Solve for x
    x = 63,162,033,375.69/282,808.60
  6. Step 6: Final answer
    x = 223,338.45

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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.