Home / 280,585.27-387,217.23-153,269.06

Finding the Fourth Proportional to 280,585.27, 387,217.23 and 153,269.06

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Solution

The fourth proportional to 280,585.27, 387,217.23 and 153,269.06 is: 211,516.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,585.27 : 387,217.23 = 153,269.06 : x
  2. Step 2: Convert to fraction form
    280,585.27/387,217.23 = 153,269.06/x
  3. Step 3: Cross multiply
    280,585.27x = 387,217.23 × 153,269.06
  4. Step 4: Simplify right side
    280,585.27x = 59,348,421,818.36
  5. Step 5: Solve for x
    x = 59,348,421,818.36/280,585.27
  6. Step 6: Final answer
    x = 211,516.53

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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.