Home / 278,202.13-383,939.54-155,706.76

Finding the Fourth Proportional to 278,202.13, 383,939.54 and 155,706.76

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Solution

The fourth proportional to 278,202.13, 383,939.54 and 155,706.76 is: 214,886.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,202.13 : 383,939.54 = 155,706.76 : x
  2. Step 2: Convert to fraction form
    278,202.13/383,939.54 = 155,706.76/x
  3. Step 3: Cross multiply
    278,202.13x = 383,939.54 × 155,706.76
  4. Step 4: Simplify right side
    278,202.13x = 59,781,980,810.77
  5. Step 5: Solve for x
    x = 59,781,980,810.77/278,202.13
  6. Step 6: Final answer
    x = 214,886.86

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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.