Home / 278,130.05-383,827.01-157,289.34

Finding the Fourth Proportional to 278,130.05, 383,827.01 and 157,289.34

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Solution

The fourth proportional to 278,130.05, 383,827.01 and 157,289.34 is: 217,063.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,130.05 : 383,827.01 = 157,289.34 : x
  2. Step 2: Convert to fraction form
    278,130.05/383,827.01 = 157,289.34/x
  3. Step 3: Cross multiply
    278,130.05x = 383,827.01 × 157,289.34
  4. Step 4: Simplify right side
    278,130.05x = 60,371,897,729.98
  5. Step 5: Solve for x
    x = 60,371,897,729.98/278,130.05
  6. Step 6: Final answer
    x = 217,063.55

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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.