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Finding the Fourth Proportional to 612,850.79, 919,280.27 and 213,499.13

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Solution

The fourth proportional to 612,850.79, 919,280.27 and 213,499.13 is: 320,250.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,850.79 : 919,280.27 = 213,499.13 : x
  2. Step 2: Convert to fraction form
    612,850.79/919,280.27 = 213,499.13/x
  3. Step 3: Cross multiply
    612,850.79x = 919,280.27 × 213,499.13
  4. Step 4: Simplify right side
    612,850.79x = 196,265,533,808.51
  5. Step 5: Solve for x
    x = 196,265,533,808.51/612,850.79
  6. Step 6: Final answer
    x = 320,250.11

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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.