Home / 647,401.78-971,244.91-198,157.28

Finding the Fourth Proportional to 647,401.78, 971,244.91 and 198,157.28

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Solution

The fourth proportional to 647,401.78, 971,244.91 and 198,157.28 is: 297,279.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,401.78 : 971,244.91 = 198,157.28 : x
  2. Step 2: Convert to fraction form
    647,401.78/971,244.91 = 198,157.28/x
  3. Step 3: Cross multiply
    647,401.78x = 971,244.91 × 198,157.28
  4. Step 4: Simplify right side
    647,401.78x = 192,459,249,579.45
  5. Step 5: Solve for x
    x = 192,459,249,579.45/647,401.78
  6. Step 6: Final answer
    x = 297,279.46

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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.