Home / 285,205.05-393,585.89-157,877.91

Finding the Fourth Proportional to 285,205.05, 393,585.89 and 157,877.91

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Solution

The fourth proportional to 285,205.05, 393,585.89 and 157,877.91 is: 217,873.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,205.05 : 393,585.89 = 157,877.91 : x
  2. Step 2: Convert to fraction form
    285,205.05/393,585.89 = 157,877.91/x
  3. Step 3: Cross multiply
    285,205.05x = 393,585.89 × 157,877.91
  4. Step 4: Simplify right side
    285,205.05x = 62,138,516,929.30
  5. Step 5: Solve for x
    x = 62,138,516,929.30/285,205.05
  6. Step 6: Final answer
    x = 217,873.13

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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.