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Finding the Fourth Proportional to 212,316.08, 318,477.36 and 54,541.04

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Solution

The fourth proportional to 212,316.08, 318,477.36 and 54,541.04 is: 81,812.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,316.08 : 318,477.36 = 54,541.04 : x
  2. Step 2: Convert to fraction form
    212,316.08/318,477.36 = 54,541.04/x
  3. Step 3: Cross multiply
    212,316.08x = 318,477.36 × 54,541.04
  4. Step 4: Simplify right side
    212,316.08x = 17,370,086,430.85
  5. Step 5: Solve for x
    x = 17,370,086,430.85/212,316.08
  6. Step 6: Final answer
    x = 81,812.39

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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.