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Finding the Fourth Proportional to 219,803.80, 329,705.70 and 70,042.90

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Solution

The fourth proportional to 219,803.80, 329,705.70 and 70,042.90 is: 105,064.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,803.80 : 329,705.70 = 70,042.90 : x
  2. Step 2: Convert to fraction form
    219,803.80/329,705.70 = 70,042.90/x
  3. Step 3: Cross multiply
    219,803.80x = 329,705.70 × 70,042.90
  4. Step 4: Simplify right side
    219,803.80x = 23,093,543,374.53
  5. Step 5: Solve for x
    x = 23,093,543,374.53/219,803.80
  6. Step 6: Final answer
    x = 105,064.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.