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Finding the Fourth Proportional to 368,999.30, 553,513.50 and 102,783.08

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Solution

The fourth proportional to 368,999.30, 553,513.50 and 102,783.08 is: 154,178.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,999.30 : 553,513.50 = 102,783.08 : x
  2. Step 2: Convert to fraction form
    368,999.30/553,513.50 = 102,783.08/x
  3. Step 3: Cross multiply
    368,999.30x = 553,513.50 × 102,783.08
  4. Step 4: Simplify right side
    368,999.30x = 56,891,822,351.58
  5. Step 5: Solve for x
    x = 56,891,822,351.58/368,999.30
  6. Step 6: Final answer
    x = 154,178.67

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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.