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Finding the Fourth Proportional to 293,143.80, 439,715.70 and 218,494.20

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Solution

The fourth proportional to 293,143.80, 439,715.70 and 218,494.20 is: 327,741.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,143.80 : 439,715.70 = 218,494.20 : x
  2. Step 2: Convert to fraction form
    293,143.80/439,715.70 = 218,494.20/x
  3. Step 3: Cross multiply
    293,143.80x = 439,715.70 × 218,494.20
  4. Step 4: Simplify right side
    293,143.80x = 96,075,330,098.94
  5. Step 5: Solve for x
    x = 96,075,330,098.94/293,143.80
  6. Step 6: Final answer
    x = 327,741.30

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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.