Home / 280,827.90-421,243.65-112,362.30

Finding the Fourth Proportional to 280,827.90, 421,243.65 and 112,362.30

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Solution

The fourth proportional to 280,827.90, 421,243.65 and 112,362.30 is: 168,544.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,827.90 : 421,243.65 = 112,362.30 : x
  2. Step 2: Convert to fraction form
    280,827.90/421,243.65 = 112,362.30/x
  3. Step 3: Cross multiply
    280,827.90x = 421,243.65 × 112,362.30
  4. Step 4: Simplify right side
    280,827.90x = 47,331,905,374.40
  5. Step 5: Solve for x
    x = 47,331,905,374.40/280,827.90
  6. Step 6: Final answer
    x = 168,544.17

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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.