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Finding the Fourth Proportional to 330,200.30, 495,300.45 and 212,102.30

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Solution

The fourth proportional to 330,200.30, 495,300.45 and 212,102.30 is: 318,153.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,200.30 : 495,300.45 = 212,102.30 : x
  2. Step 2: Convert to fraction form
    330,200.30/495,300.45 = 212,102.30/x
  3. Step 3: Cross multiply
    330,200.30x = 495,300.45 × 212,102.30
  4. Step 4: Simplify right side
    330,200.30x = 105,054,364,636.04
  5. Step 5: Solve for x
    x = 105,054,364,636.04/330,200.30
  6. Step 6: Final answer
    x = 318,153.45

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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.