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Finding the Fourth Proportional to 212,712.90, 297,404.40 and 212,712.90

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Solution

The fourth proportional to 212,712.90, 297,404.40 and 212,712.90 is: 297,404.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,712.90 : 297,404.40 = 212,712.90 : x
  2. Step 2: Convert to fraction form
    212,712.90/297,404.40 = 212,712.90/x
  3. Step 3: Cross multiply
    212,712.90x = 297,404.40 × 212,712.90
  4. Step 4: Simplify right side
    212,712.90x = 63,261,752,396.76
  5. Step 5: Solve for x
    x = 63,261,752,396.76/212,712.90
  6. Step 6: Final answer
    x = 297,404.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.