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Finding the Fourth Proportional to 355,878.59, 491,097.82 and 212,717.57

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Solution

The fourth proportional to 355,878.59, 491,097.82 and 212,717.57 is: 293,541.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,878.59 : 491,097.82 = 212,717.57 : x
  2. Step 2: Convert to fraction form
    355,878.59/491,097.82 = 212,717.57/x
  3. Step 3: Cross multiply
    355,878.59x = 491,097.82 × 212,717.57
  4. Step 4: Simplify right side
    355,878.59x = 104,465,133,839.11
  5. Step 5: Solve for x
    x = 104,465,133,839.11/355,878.59
  6. Step 6: Final answer
    x = 293,541.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.