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Finding the Fourth Proportional to 280,325.80, 386,974.02 and 189,813.16

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Solution

The fourth proportional to 280,325.80, 386,974.02 and 189,813.16 is: 262,026.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,325.80 : 386,974.02 = 189,813.16 : x
  2. Step 2: Convert to fraction form
    280,325.80/386,974.02 = 189,813.16/x
  3. Step 3: Cross multiply
    280,325.80x = 386,974.02 × 189,813.16
  4. Step 4: Simplify right side
    280,325.80x = 73,452,761,574.10
  5. Step 5: Solve for x
    x = 73,452,761,574.10/280,325.80
  6. Step 6: Final answer
    x = 262,026.40

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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.