Home / 338,031.90-507,041.85-135,679.50

Finding the Fourth Proportional to 338,031.90, 507,041.85 and 135,679.50

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Solution

The fourth proportional to 338,031.90, 507,041.85 and 135,679.50 is: 203,516.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,031.90 : 507,041.85 = 135,679.50 : x
  2. Step 2: Convert to fraction form
    338,031.90/507,041.85 = 135,679.50/x
  3. Step 3: Cross multiply
    338,031.90x = 507,041.85 × 135,679.50
  4. Step 4: Simplify right side
    338,031.90x = 68,795,184,687.08
  5. Step 5: Solve for x
    x = 68,795,184,687.08/338,031.90
  6. Step 6: Final answer
    x = 203,516.84

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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.