Home / 278,129.07-383,815.40-150,802.47

Finding the Fourth Proportional to 278,129.07, 383,815.40 and 150,802.47

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Solution

The fourth proportional to 278,129.07, 383,815.40 and 150,802.47 is: 208,105.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,129.07 : 383,815.40 = 150,802.47 : x
  2. Step 2: Convert to fraction form
    278,129.07/383,815.40 = 150,802.47/x
  3. Step 3: Cross multiply
    278,129.07x = 383,815.40 × 150,802.47
  4. Step 4: Simplify right side
    278,129.07x = 57,880,309,590.03
  5. Step 5: Solve for x
    x = 57,880,309,590.03/278,129.07
  6. Step 6: Final answer
    x = 208,105.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.