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Finding the Fourth Proportional to 305,088.96, 421,002.72 and 170,927.04

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Solution

The fourth proportional to 305,088.96, 421,002.72 and 170,927.04 is: 235,868.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,088.96 : 421,002.72 = 170,927.04 : x
  2. Step 2: Convert to fraction form
    305,088.96/421,002.72 = 170,927.04/x
  3. Step 3: Cross multiply
    305,088.96x = 421,002.72 × 170,927.04
  4. Step 4: Simplify right side
    305,088.96x = 71,960,748,761.55
  5. Step 5: Solve for x
    x = 71,960,748,761.55/305,088.96
  6. Step 6: Final answer
    x = 235,868.09

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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.