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Finding the Fourth Proportional to 353,617.79, 488,003.10 and 217,730.13

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Solution

The fourth proportional to 353,617.79, 488,003.10 and 217,730.13 is: 300,474.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,617.79 : 488,003.10 = 217,730.13 : x
  2. Step 2: Convert to fraction form
    353,617.79/488,003.10 = 217,730.13/x
  3. Step 3: Cross multiply
    353,617.79x = 488,003.10 × 217,730.13
  4. Step 4: Simplify right side
    353,617.79x = 106,252,975,756.90
  5. Step 5: Solve for x
    x = 106,252,975,756.90/353,617.79
  6. Step 6: Final answer
    x = 300,474.07

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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.