Home / 231,000.30-346,500.45-213,720.30

Finding the Fourth Proportional to 231,000.30, 346,500.45 and 213,720.30

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Solution

The fourth proportional to 231,000.30, 346,500.45 and 213,720.30 is: 320,580.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,000.30 : 346,500.45 = 213,720.30 : x
  2. Step 2: Convert to fraction form
    231,000.30/346,500.45 = 213,720.30/x
  3. Step 3: Cross multiply
    231,000.30x = 346,500.45 × 213,720.30
  4. Step 4: Simplify right side
    231,000.30x = 74,054,180,124.14
  5. Step 5: Solve for x
    x = 74,054,180,124.14/231,000.30
  6. Step 6: Final answer
    x = 320,580.45

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1.5x scale

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.