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Finding the Fourth Proportional to 353,505.65, 488,329.84 and 340,381.64

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Solution

The fourth proportional to 353,505.65, 488,329.84 and 340,381.64 is: 470,200.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,505.65 : 488,329.84 = 340,381.64 : x
  2. Step 2: Convert to fraction form
    353,505.65/488,329.84 = 340,381.64/x
  3. Step 3: Cross multiply
    353,505.65x = 488,329.84 × 340,381.64
  4. Step 4: Simplify right side
    353,505.65x = 166,218,512,946.93
  5. Step 5: Solve for x
    x = 166,218,512,946.93/353,505.65
  6. Step 6: Final answer
    x = 470,200.44

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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.