Home / 278,835.74-384,795.67-151,511.35

Finding the Fourth Proportional to 278,835.74, 384,795.67 and 151,511.35

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Solution

The fourth proportional to 278,835.74, 384,795.67 and 151,511.35 is: 209,086.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,835.74 : 384,795.67 = 151,511.35 : x
  2. Step 2: Convert to fraction form
    278,835.74/384,795.67 = 151,511.35/x
  3. Step 3: Cross multiply
    278,835.74x = 384,795.67 × 151,511.35
  4. Step 4: Simplify right side
    278,835.74x = 58,300,909,511.88
  5. Step 5: Solve for x
    x = 58,300,909,511.88/278,835.74
  6. Step 6: Final answer
    x = 209,086.93

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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.