Home / 280,916.42-387,662.01-153,590.66

Finding the Fourth Proportional to 280,916.42, 387,662.01 and 153,590.66

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Solution

The fourth proportional to 280,916.42, 387,662.01 and 153,590.66 is: 211,953.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,916.42 : 387,662.01 = 153,590.66 : x
  2. Step 2: Convert to fraction form
    280,916.42/387,662.01 = 153,590.66/x
  3. Step 3: Cross multiply
    280,916.42x = 387,662.01 × 153,590.66
  4. Step 4: Simplify right side
    280,916.42x = 59,541,263,972.83
  5. Step 5: Solve for x
    x = 59,541,263,972.83/280,916.42
  6. Step 6: Final answer
    x = 211,953.66

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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.