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Finding the Fourth Proportional to 314,977.40, 472,466.10 and 309,728.60

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Solution

The fourth proportional to 314,977.40, 472,466.10 and 309,728.60 is: 464,592.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,977.40 : 472,466.10 = 309,728.60 : x
  2. Step 2: Convert to fraction form
    314,977.40/472,466.10 = 309,728.60/x
  3. Step 3: Cross multiply
    314,977.40x = 472,466.10 × 309,728.60
  4. Step 4: Simplify right side
    314,977.40x = 146,336,263,700.46
  5. Step 5: Solve for x
    x = 146,336,263,700.46/314,977.40
  6. Step 6: Final answer
    x = 464,592.90

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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.