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Finding the Fourth Proportional to 282,620.40, 390,037.85 and 161,799.58

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Solution

The fourth proportional to 282,620.40, 390,037.85 and 161,799.58 is: 223,295.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,620.40 : 390,037.85 = 161,799.58 : x
  2. Step 2: Convert to fraction form
    282,620.40/390,037.85 = 161,799.58/x
  3. Step 3: Cross multiply
    282,620.40x = 390,037.85 × 161,799.58
  4. Step 4: Simplify right side
    282,620.40x = 63,107,960,314.10
  5. Step 5: Solve for x
    x = 63,107,960,314.10/282,620.40
  6. Step 6: Final answer
    x = 223,295.84

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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.