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Finding the Fourth Proportional to 368,808.60, 553,137.30 and 102,502.20

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Solution

The fourth proportional to 368,808.60, 553,137.30 and 102,502.20 is: 153,732.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,808.60 : 553,137.30 = 102,502.20 : x
  2. Step 2: Convert to fraction form
    368,808.60/553,137.30 = 102,502.20/x
  3. Step 3: Cross multiply
    368,808.60x = 553,137.30 × 102,502.20
  4. Step 4: Simplify right side
    368,808.60x = 56,697,790,152.06
  5. Step 5: Solve for x
    x = 56,697,790,152.06/368,808.60
  6. Step 6: Final answer
    x = 153,732.29

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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.