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Finding the Fourth Proportional to 353,084.60, 528,935.70 and 212,425.40

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Solution

The fourth proportional to 353,084.60, 528,935.70 and 212,425.40 is: 318,222.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,084.60 : 528,935.70 = 212,425.40 : x
  2. Step 2: Convert to fraction form
    353,084.60/528,935.70 = 212,425.40/x
  3. Step 3: Cross multiply
    353,084.60x = 528,935.70 × 212,425.40
  4. Step 4: Simplify right side
    353,084.60x = 112,359,377,646.78
  5. Step 5: Solve for x
    x = 112,359,377,646.78/353,084.60
  6. Step 6: Final answer
    x = 318,222.26

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.