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Finding the Fourth Proportional to 302,420.60, 453,630.90 and 207,942.20

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Solution

The fourth proportional to 302,420.60, 453,630.90 and 207,942.20 is: 311,913.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,420.60 : 453,630.90 = 207,942.20 : x
  2. Step 2: Convert to fraction form
    302,420.60/453,630.90 = 207,942.20/x
  3. Step 3: Cross multiply
    302,420.60x = 453,630.90 × 207,942.20
  4. Step 4: Simplify right side
    302,420.60x = 94,329,007,333.98
  5. Step 5: Solve for x
    x = 94,329,007,333.98/302,420.60
  6. Step 6: Final answer
    x = 311,913.30

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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.