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Finding the Fourth Proportional to 245,802.87, 368,705.48 and 85,878.14

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Solution

The fourth proportional to 245,802.87, 368,705.48 and 85,878.14 is: 128,817.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,802.87 : 368,705.48 = 85,878.14 : x
  2. Step 2: Convert to fraction form
    245,802.87/368,705.48 = 85,878.14/x
  3. Step 3: Cross multiply
    245,802.87x = 368,705.48 × 85,878.14
  4. Step 4: Simplify right side
    245,802.87x = 31,663,738,557.29
  5. Step 5: Solve for x
    x = 31,663,738,557.29/245,802.87
  6. Step 6: Final answer
    x = 128,817.61

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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.