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Finding the Fourth Proportional to 613,298.16, 919,951.56 and 213,937.20

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Solution

The fourth proportional to 613,298.16, 919,951.56 and 213,937.20 is: 320,907.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,298.16 : 919,951.56 = 213,937.20 : x
  2. Step 2: Convert to fraction form
    613,298.16/919,951.56 = 213,937.20/x
  3. Step 3: Cross multiply
    613,298.16x = 919,951.56 × 213,937.20
  4. Step 4: Simplify right side
    613,298.16x = 196,811,860,882.03
  5. Step 5: Solve for x
    x = 196,811,860,882.03/613,298.16
  6. Step 6: Final answer
    x = 320,907.31

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1.5x scale

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.