Home / 280,143.87-386,598.08-152,819.48

Finding the Fourth Proportional to 280,143.87, 386,598.08 and 152,819.48

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Solution

The fourth proportional to 280,143.87, 386,598.08 and 152,819.48 is: 210,890.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,143.87 : 386,598.08 = 152,819.48 : x
  2. Step 2: Convert to fraction form
    280,143.87/386,598.08 = 152,819.48/x
  3. Step 3: Cross multiply
    280,143.87x = 386,598.08 × 152,819.48
  4. Step 4: Simplify right side
    280,143.87x = 59,079,714,857.51
  5. Step 5: Solve for x
    x = 59,079,714,857.51/280,143.87
  6. Step 6: Final answer
    x = 210,890.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.