Home / 289,785.40-434,772.78-140,042.92

Finding the Fourth Proportional to 289,785.40, 434,772.78 and 140,042.92

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Solution

The fourth proportional to 289,785.40, 434,772.78 and 140,042.92 is: 210,110.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,785.40 : 434,772.78 = 140,042.92 : x
  2. Step 2: Convert to fraction form
    289,785.40/434,772.78 = 140,042.92/x
  3. Step 3: Cross multiply
    289,785.40x = 434,772.78 × 140,042.92
  4. Step 4: Simplify right side
    289,785.40x = 60,886,849,647.72
  5. Step 5: Solve for x
    x = 60,886,849,647.72/289,785.40
  6. Step 6: Final answer
    x = 210,110.14

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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.