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Finding the Fourth Proportional to 293,002.80, 439,504.20 and 143,266.20

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Solution

The fourth proportional to 293,002.80, 439,504.20 and 143,266.20 is: 214,899.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,002.80 : 439,504.20 = 143,266.20 : x
  2. Step 2: Convert to fraction form
    293,002.80/439,504.20 = 143,266.20/x
  3. Step 3: Cross multiply
    293,002.80x = 439,504.20 × 143,266.20
  4. Step 4: Simplify right side
    293,002.80x = 62,966,096,618.04
  5. Step 5: Solve for x
    x = 62,966,096,618.04/293,002.80
  6. Step 6: Final answer
    x = 214,899.30

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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.