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Finding the Fourth Proportional to 340,892.19, 511,338.20 and 130,530.15

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Solution

The fourth proportional to 340,892.19, 511,338.20 and 130,530.15 is: 195,795.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,892.19 : 511,338.20 = 130,530.15 : x
  2. Step 2: Convert to fraction form
    340,892.19/511,338.20 = 130,530.15/x
  3. Step 3: Cross multiply
    340,892.19x = 511,338.20 × 130,530.15
  4. Step 4: Simplify right side
    340,892.19x = 66,745,051,294.08
  5. Step 5: Solve for x
    x = 66,745,051,294.08/340,892.19
  6. Step 6: Final answer
    x = 195,795.19

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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.