Home / 305,311.29-421,314.69-169,333.20

Finding the Fourth Proportional to 305,311.29, 421,314.69 and 169,333.20

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Solution

The fourth proportional to 305,311.29, 421,314.69 and 169,333.20 is: 233,671.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,311.29 : 421,314.69 = 169,333.20 : x
  2. Step 2: Convert to fraction form
    305,311.29/421,314.69 = 169,333.20/x
  3. Step 3: Cross multiply
    305,311.29x = 421,314.69 × 169,333.20
  4. Step 4: Simplify right side
    305,311.29x = 71,342,564,664.71
  5. Step 5: Solve for x
    x = 71,342,564,664.71/305,311.29
  6. Step 6: Final answer
    x = 233,671.56

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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.