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Finding the Fourth Proportional to 405,520.64, 608,217.16 and 255,301.08

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Solution

The fourth proportional to 405,520.64, 608,217.16 and 255,301.08 is: 382,911.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,520.64 : 608,217.16 = 255,301.08 : x
  2. Step 2: Convert to fraction form
    405,520.64/608,217.16 = 255,301.08/x
  3. Step 3: Cross multiply
    405,520.64x = 608,217.16 × 255,301.08
  4. Step 4: Simplify right side
    405,520.64x = 155,278,497,822.53
  5. Step 5: Solve for x
    x = 155,278,497,822.53/405,520.64
  6. Step 6: Final answer
    x = 382,911.45

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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.