Home / 278,511.75-384,347.03-151,187.45

Finding the Fourth Proportional to 278,511.75, 384,347.03 and 151,187.45

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Solution

The fourth proportional to 278,511.75, 384,347.03 and 151,187.45 is: 208,639.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,511.75 : 384,347.03 = 151,187.45 : x
  2. Step 2: Convert to fraction form
    278,511.75/384,347.03 = 151,187.45/x
  3. Step 3: Cross multiply
    278,511.75x = 384,347.03 × 151,187.45
  4. Step 4: Simplify right side
    278,511.75x = 58,108,444,703.10
  5. Step 5: Solve for x
    x = 58,108,444,703.10/278,511.75
  6. Step 6: Final answer
    x = 208,639.11

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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.