Home / 315,060.32-434,827.68-187,738.40

Finding the Fourth Proportional to 315,060.32, 434,827.68 and 187,738.40

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Solution

The fourth proportional to 315,060.32, 434,827.68 and 187,738.40 is: 259,105.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,060.32 : 434,827.68 = 187,738.40 : x
  2. Step 2: Convert to fraction form
    315,060.32/434,827.68 = 187,738.40/x
  3. Step 3: Cross multiply
    315,060.32x = 434,827.68 × 187,738.40
  4. Step 4: Simplify right side
    315,060.32x = 81,633,852,918.91
  5. Step 5: Solve for x
    x = 81,633,852,918.91/315,060.32
  6. Step 6: Final answer
    x = 259,105.47

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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.