Home / 285,138,098.20-393,445,628.68-166,080,284.38

Finding the Fourth Proportional to 285,138,098.20, 393,445,628.68 and 166,080,284.38

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Solution

The fourth proportional to 285,138,098.20, 393,445,628.68 and 166,080,284.38 is: 229,164,612.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,138,098.20 : 393,445,628.68 = 166,080,284.38 : x
  2. Step 2: Convert to fraction form
    285,138,098.20/393,445,628.68 = 166,080,284.38/x
  3. Step 3: Cross multiply
    285,138,098.20x = 393,445,628.68 × 166,080,284.38
  4. Step 4: Simplify right side
    285,138,098.20x = 65,343,561,899,041,648
  5. Step 5: Solve for x
    x = 65,343,561,899,041,648/285,138,098.20
  6. Step 6: Final answer
    x = 229,164,612.91

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1.5x scale

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.