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Finding the Fourth Proportional to 352,465.60, 528,007.20 and 211,806.40

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Solution

The fourth proportional to 352,465.60, 528,007.20 and 211,806.40 is: 317,294.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,465.60 : 528,007.20 = 211,806.40 : x
  2. Step 2: Convert to fraction form
    352,465.60/528,007.20 = 211,806.40/x
  3. Step 3: Cross multiply
    352,465.60x = 528,007.20 × 211,806.40
  4. Step 4: Simplify right side
    352,465.60x = 111,835,304,206.08
  5. Step 5: Solve for x
    x = 111,835,304,206.08/352,465.60
  6. Step 6: Final answer
    x = 317,294.24

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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.