Home / 280,451,729.31-420,686,164.14-96,216,621.12

Finding the Fourth Proportional to 280,451,729.31, 420,686,164.14 and 96,216,621.12

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Solution

The fourth proportional to 280,451,729.31, 420,686,164.14 and 96,216,621.12 is: 144,327,871.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,451,729.31 : 420,686,164.14 = 96,216,621.12 : x
  2. Step 2: Convert to fraction form
    280,451,729.31/420,686,164.14 = 96,216,621.12/x
  3. Step 3: Cross multiply
    280,451,729.31x = 420,686,164.14 × 96,216,621.12
  4. Step 4: Simplify right side
    280,451,729.31x = 40,477,001,265,484,512
  5. Step 5: Solve for x
    x = 40,477,001,265,484,512/280,451,729.31
  6. Step 6: Final answer
    x = 144,327,871.91

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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.