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Finding the Fourth Proportional to 297,266.20, 445,899.30 and 139,802.20

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Solution

The fourth proportional to 297,266.20, 445,899.30 and 139,802.20 is: 209,703.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,266.20 : 445,899.30 = 139,802.20 : x
  2. Step 2: Convert to fraction form
    297,266.20/445,899.30 = 139,802.20/x
  3. Step 3: Cross multiply
    297,266.20x = 445,899.30 × 139,802.20
  4. Step 4: Simplify right side
    297,266.20x = 62,337,703,118.46
  5. Step 5: Solve for x
    x = 62,337,703,118.46/297,266.20
  6. Step 6: Final answer
    x = 209,703.30

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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.