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Finding the Fourth Proportional to 446,090, 669,197.40 and 130,569.68

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Solution

The fourth proportional to 446,090, 669,197.40 and 130,569.68 is: 195,872.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,090 : 669,197.40 = 130,569.68 : x
  2. Step 2: Convert to fraction form
    446,090/669,197.40 = 130,569.68/x
  3. Step 3: Cross multiply
    446,090x = 669,197.40 × 130,569.68
  4. Step 4: Simplify right side
    446,090x = 87,376,890,374.83
  5. Step 5: Solve for x
    x = 87,376,890,374.83/446,090
  6. Step 6: Final answer
    x = 195,872.78

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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.