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Finding the Fourth Proportional to 610,938.68, 916,530.90 and 211,570.60

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Solution

The fourth proportional to 610,938.68, 916,530.90 and 211,570.60 is: 317,398.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,938.68 : 916,530.90 = 211,570.60 : x
  2. Step 2: Convert to fraction form
    610,938.68/916,530.90 = 211,570.60/x
  3. Step 3: Cross multiply
    610,938.68x = 916,530.90 × 211,570.60
  4. Step 4: Simplify right side
    610,938.68x = 193,910,992,431.54
  5. Step 5: Solve for x
    x = 193,910,992,431.54/610,938.68
  6. Step 6: Final answer
    x = 317,398.45

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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.