Home / 312,108.61-430,706.82-168,865.51

Finding the Fourth Proportional to 312,108.61, 430,706.82 and 168,865.51

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Solution

The fourth proportional to 312,108.61, 430,706.82 and 168,865.51 is: 233,032.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,108.61 : 430,706.82 = 168,865.51 : x
  2. Step 2: Convert to fraction form
    312,108.61/430,706.82 = 168,865.51/x
  3. Step 3: Cross multiply
    312,108.61x = 430,706.82 × 168,865.51
  4. Step 4: Simplify right side
    312,108.61x = 72,731,526,819.78
  5. Step 5: Solve for x
    x = 72,731,526,819.78/312,108.61
  6. Step 6: Final answer
    x = 233,032.75

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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.