Home / 280,931.16-421,308.90-93,898.92

Finding the Fourth Proportional to 280,931.16, 421,308.90 and 93,898.92

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Solution

The fourth proportional to 280,931.16, 421,308.90 and 93,898.92 is: 140,819.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,931.16 : 421,308.90 = 93,898.92 : x
  2. Step 2: Convert to fraction form
    280,931.16/421,308.90 = 93,898.92/x
  3. Step 3: Cross multiply
    280,931.16x = 421,308.90 × 93,898.92
  4. Step 4: Simplify right side
    280,931.16x = 39,560,450,696.39
  5. Step 5: Solve for x
    x = 39,560,450,696.39/280,931.16
  6. Step 6: Final answer
    x = 140,819.02

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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.