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Finding the Fourth Proportional to 613,325.21, 920,125.02 and 186,894.40

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Solution

The fourth proportional to 613,325.21, 920,125.02 and 186,894.40 is: 280,383.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,325.21 : 920,125.02 = 186,894.40 : x
  2. Step 2: Convert to fraction form
    613,325.21/920,125.02 = 186,894.40/x
  3. Step 3: Cross multiply
    613,325.21x = 920,125.02 × 186,894.40
  4. Step 4: Simplify right side
    613,325.21x = 171,966,216,988.36
  5. Step 5: Solve for x
    x = 171,966,216,988.36/613,325.21
  6. Step 6: Final answer
    x = 280,383.42

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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.