Home / 278,316.85-384,113.42-155,855.85

Finding the Fourth Proportional to 278,316.85, 384,113.42 and 155,855.85

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Solution

The fourth proportional to 278,316.85, 384,113.42 and 155,855.85 is: 215,101.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,316.85 : 384,113.42 = 155,855.85 : x
  2. Step 2: Convert to fraction form
    278,316.85/384,113.42 = 155,855.85/x
  3. Step 3: Cross multiply
    278,316.85x = 384,113.42 × 155,855.85
  4. Step 4: Simplify right side
    278,316.85x = 59,866,323,570.51
  5. Step 5: Solve for x
    x = 59,866,323,570.51/278,316.85
  6. Step 6: Final answer
    x = 215,101.33

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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.