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Finding the Fourth Proportional to 354,701.40, 530,516.10 and 317,530.20

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Solution

The fourth proportional to 354,701.40, 530,516.10 and 317,530.20 is: 474,920.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,701.40 : 530,516.10 = 317,530.20 : x
  2. Step 2: Convert to fraction form
    354,701.40/530,516.10 = 317,530.20/x
  3. Step 3: Cross multiply
    354,701.40x = 530,516.10 × 317,530.20
  4. Step 4: Simplify right side
    354,701.40x = 168,454,883,336.22
  5. Step 5: Solve for x
    x = 168,454,883,336.22/354,701.40
  6. Step 6: Final answer
    x = 474,920.27

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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.