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Finding the Fourth Proportional to 354,688.40, 530,496.60 and 317,517.20

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Solution

The fourth proportional to 354,688.40, 530,496.60 and 317,517.20 is: 474,900.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,688.40 : 530,496.60 = 317,517.20 : x
  2. Step 2: Convert to fraction form
    354,688.40/530,496.60 = 317,517.20/x
  3. Step 3: Cross multiply
    354,688.40x = 530,496.60 × 317,517.20
  4. Step 4: Simplify right side
    354,688.40x = 168,441,795,041.52
  5. Step 5: Solve for x
    x = 168,441,795,041.52/354,688.40
  6. Step 6: Final answer
    x = 474,900.77

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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.