Home / 260,109,322.13-390,165,287.03-66,020,795.21

Finding the Fourth Proportional to 260,109,322.13, 390,165,287.03 and 66,020,795.21

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Solution

The fourth proportional to 260,109,322.13, 390,165,287.03 and 66,020,795.21 is: 99,031,523.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,109,322.13 : 390,165,287.03 = 66,020,795.21 : x
  2. Step 2: Convert to fraction form
    260,109,322.13/390,165,287.03 = 66,020,795.21/x
  3. Step 3: Cross multiply
    260,109,322.13x = 390,165,287.03 × 66,020,795.21
  4. Step 4: Simplify right side
    260,109,322.13x = 25,759,022,512,728,392
  5. Step 5: Solve for x
    x = 25,759,022,512,728,392/260,109,322.13
  6. Step 6: Final answer
    x = 99,031,523.75

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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.