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Finding the Fourth Proportional to 353,516.34, 530,275.61 and 87,276.88

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Solution

The fourth proportional to 353,516.34, 530,275.61 and 87,276.88 is: 130,915.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,516.34 : 530,275.61 = 87,276.88 : x
  2. Step 2: Convert to fraction form
    353,516.34/530,275.61 = 87,276.88/x
  3. Step 3: Cross multiply
    353,516.34x = 530,275.61 × 87,276.88
  4. Step 4: Simplify right side
    353,516.34x = 46,280,800,780.90
  5. Step 5: Solve for x
    x = 46,280,800,780.90/353,516.34
  6. Step 6: Final answer
    x = 130,915.59

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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.