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Finding the Fourth Proportional to 368,994.29, 553,506.01 and 102,778.07

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Solution

The fourth proportional to 368,994.29, 553,506.01 and 102,778.07 is: 154,171.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,994.29 : 553,506.01 = 102,778.07 : x
  2. Step 2: Convert to fraction form
    368,994.29/553,506.01 = 102,778.07/x
  3. Step 3: Cross multiply
    368,994.29x = 553,506.01 × 102,778.07
  4. Step 4: Simplify right side
    368,994.29x = 56,888,276,416.73
  5. Step 5: Solve for x
    x = 56,888,276,416.73/368,994.29
  6. Step 6: Final answer
    x = 154,171.16

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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.