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Finding the Fourth Proportional to 347,776.80, 520,498.80 and 305,786.40

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Solution

The fourth proportional to 347,776.80, 520,498.80 and 305,786.40 is: 457,654.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,776.80 : 520,498.80 = 305,786.40 : x
  2. Step 2: Convert to fraction form
    347,776.80/520,498.80 = 305,786.40/x
  3. Step 3: Cross multiply
    347,776.80x = 520,498.80 × 305,786.40
  4. Step 4: Simplify right side
    347,776.80x = 159,161,454,256.32
  5. Step 5: Solve for x
    x = 159,161,454,256.32/347,776.80
  6. Step 6: Final answer
    x = 457,654.03

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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.