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Finding the Fourth Proportional to 212,004, 318,006.54 and 64,260

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Solution

The fourth proportional to 212,004, 318,006.54 and 64,260 is: 96,390.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,004 : 318,006.54 = 64,260 : x
  2. Step 2: Convert to fraction form
    212,004/318,006.54 = 64,260/x
  3. Step 3: Cross multiply
    212,004x = 318,006.54 × 64,260
  4. Step 4: Simplify right side
    212,004x = 20,435,100,260.40
  5. Step 5: Solve for x
    x = 20,435,100,260.40/212,004
  6. Step 6: Final answer
    x = 96,390.16

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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.