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Finding the Fourth Proportional to 446,200.80, 668,134.80 and 287,570.40

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Solution

The fourth proportional to 446,200.80, 668,134.80 and 287,570.40 is: 430,603.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,200.80 : 668,134.80 = 287,570.40 : x
  2. Step 2: Convert to fraction form
    446,200.80/668,134.80 = 287,570.40/x
  3. Step 3: Cross multiply
    446,200.80x = 668,134.80 × 287,570.40
  4. Step 4: Simplify right side
    446,200.80x = 192,135,791,689.92
  5. Step 5: Solve for x
    x = 192,135,791,689.92/446,200.80
  6. Step 6: Final answer
    x = 430,603.87

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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.