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Finding the Fourth Proportional to 280,865.60, 421,298.40 and 245,873.60

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Solution

The fourth proportional to 280,865.60, 421,298.40 and 245,873.60 is: 368,810.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,865.60 : 421,298.40 = 245,873.60 : x
  2. Step 2: Convert to fraction form
    280,865.60/421,298.40 = 245,873.60/x
  3. Step 3: Cross multiply
    280,865.60x = 421,298.40 × 245,873.60
  4. Step 4: Simplify right side
    280,865.60x = 103,586,154,282.24
  5. Step 5: Solve for x
    x = 103,586,154,282.24/280,865.60
  6. Step 6: Final answer
    x = 368,810.40

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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.