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Finding the Fourth Proportional to 328,600.80, 492,901.20 and 291,859.20

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Solution

The fourth proportional to 328,600.80, 492,901.20 and 291,859.20 is: 437,788.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,600.80 : 492,901.20 = 291,859.20 : x
  2. Step 2: Convert to fraction form
    328,600.80/492,901.20 = 291,859.20/x
  3. Step 3: Cross multiply
    328,600.80x = 492,901.20 × 291,859.20
  4. Step 4: Simplify right side
    328,600.80x = 143,857,749,911.04
  5. Step 5: Solve for x
    x = 143,857,749,911.04/328,600.80
  6. Step 6: Final answer
    x = 437,788.80

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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.