Home / 280,229,507.54-420,384,376.35-86,157,216.12

Finding the Fourth Proportional to 280,229,507.54, 420,384,376.35 and 86,157,216.12

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Solution

The fourth proportional to 280,229,507.54, 420,384,376.35 and 86,157,216.12 is: 129,248,157.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,229,507.54 : 420,384,376.35 = 86,157,216.12 : x
  2. Step 2: Convert to fraction form
    280,229,507.54/420,384,376.35 = 86,157,216.12/x
  3. Step 3: Cross multiply
    280,229,507.54x = 420,384,376.35 × 86,157,216.12
  4. Step 4: Simplify right side
    280,229,507.54x = 36,219,147,566,658,368
  5. Step 5: Solve for x
    x = 36,219,147,566,658,368/280,229,507.54
  6. Step 6: Final answer
    x = 129,248,157.64

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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.