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Finding the Fourth Proportional to 346,090.60, 518,751.90 and 135,658.60

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Solution

The fourth proportional to 346,090.60, 518,751.90 and 135,658.60 is: 203,337.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,090.60 : 518,751.90 = 135,658.60 : x
  2. Step 2: Convert to fraction form
    346,090.60/518,751.90 = 135,658.60/x
  3. Step 3: Cross multiply
    346,090.60x = 518,751.90 × 135,658.60
  4. Step 4: Simplify right side
    346,090.60x = 70,373,156,501.34
  5. Step 5: Solve for x
    x = 70,373,156,501.34/346,090.60
  6. Step 6: Final answer
    x = 203,337.38

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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.