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Finding the Fourth Proportional to 235,430.20, 353,145.30 and 219,878.20

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Solution

The fourth proportional to 235,430.20, 353,145.30 and 219,878.20 is: 329,817.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,430.20 : 353,145.30 = 219,878.20 : x
  2. Step 2: Convert to fraction form
    235,430.20/353,145.30 = 219,878.20/x
  3. Step 3: Cross multiply
    235,430.20x = 353,145.30 × 219,878.20
  4. Step 4: Simplify right side
    235,430.20x = 77,648,952,902.46
  5. Step 5: Solve for x
    x = 77,648,952,902.46/235,430.20
  6. Step 6: Final answer
    x = 329,817.30

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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.