Home / 280,943.28-421,415.30-114,731.28

Finding the Fourth Proportional to 280,943.28, 421,415.30 and 114,731.28

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Solution

The fourth proportional to 280,943.28, 421,415.30 and 114,731.28 is: 172,097.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,943.28 : 421,415.30 = 114,731.28 : x
  2. Step 2: Convert to fraction form
    280,943.28/421,415.30 = 114,731.28/x
  3. Step 3: Cross multiply
    280,943.28x = 421,415.30 × 114,731.28
  4. Step 4: Simplify right side
    280,943.28x = 48,349,516,780.58
  5. Step 5: Solve for x
    x = 48,349,516,780.58/280,943.28
  6. Step 6: Final answer
    x = 172,097.08

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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.