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Finding the Fourth Proportional to 307,800.60, 461,636.10 and 130,313.40

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Solution

The fourth proportional to 307,800.60, 461,636.10 and 130,313.40 is: 195,442.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,800.60 : 461,636.10 = 130,313.40 : x
  2. Step 2: Convert to fraction form
    307,800.60/461,636.10 = 130,313.40/x
  3. Step 3: Cross multiply
    307,800.60x = 461,636.10 × 130,313.40
  4. Step 4: Simplify right side
    307,800.60x = 60,157,369,753.74
  5. Step 5: Solve for x
    x = 60,157,369,753.74/307,800.60
  6. Step 6: Final answer
    x = 195,442.67

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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.