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Finding the Fourth Proportional to 355,483.48, 490,573.06 and 212,256.04

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Solution

The fourth proportional to 355,483.48, 490,573.06 and 212,256.04 is: 292,916.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,483.48 : 490,573.06 = 212,256.04 : x
  2. Step 2: Convert to fraction form
    355,483.48/490,573.06 = 212,256.04/x
  3. Step 3: Cross multiply
    355,483.48x = 490,573.06 × 212,256.04
  4. Step 4: Simplify right side
    355,483.48x = 104,127,093,985.00
  5. Step 5: Solve for x
    x = 104,127,093,985.00/355,483.48
  6. Step 6: Final answer
    x = 292,916.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.