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Finding the Fourth Proportional to 446,681.80, 668,856.30 and 288,051.40

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Solution

The fourth proportional to 446,681.80, 668,856.30 and 288,051.40 is: 431,324.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,681.80 : 668,856.30 = 288,051.40 : x
  2. Step 2: Convert to fraction form
    446,681.80/668,856.30 = 288,051.40/x
  3. Step 3: Cross multiply
    446,681.80x = 668,856.30 × 288,051.40
  4. Step 4: Simplify right side
    446,681.80x = 192,664,993,613.82
  5. Step 5: Solve for x
    x = 192,664,993,613.82/446,681.80
  6. Step 6: Final answer
    x = 431,324.92

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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.