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Finding the Fourth Proportional to 341,930.40, 513,316.80 and 215,570.40

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Solution

The fourth proportional to 341,930.40, 513,316.80 and 215,570.40 is: 323,621.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,930.40 : 513,316.80 = 215,570.40 : x
  2. Step 2: Convert to fraction form
    341,930.40/513,316.80 = 215,570.40/x
  3. Step 3: Cross multiply
    341,930.40x = 513,316.80 × 215,570.40
  4. Step 4: Simplify right side
    341,930.40x = 110,655,907,902.72
  5. Step 5: Solve for x
    x = 110,655,907,902.72/341,930.40
  6. Step 6: Final answer
    x = 323,621.15

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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.