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Finding the Fourth Proportional to 234,705.20, 351,483.61 and 211,960.40

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Solution

The fourth proportional to 234,705.20, 351,483.61 and 211,960.40 is: 317,422.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,705.20 : 351,483.61 = 211,960.40 : x
  2. Step 2: Convert to fraction form
    234,705.20/351,483.61 = 211,960.40/x
  3. Step 3: Cross multiply
    234,705.20x = 351,483.61 × 211,960.40
  4. Step 4: Simplify right side
    234,705.20x = 74,500,606,569.04
  5. Step 5: Solve for x
    x = 74,500,606,569.04/234,705.20
  6. Step 6: Final answer
    x = 317,422.05

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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.