Home / 278,639.91-384,512.81-151,312.77

Finding the Fourth Proportional to 278,639.91, 384,512.81 and 151,312.77

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Solution

The fourth proportional to 278,639.91, 384,512.81 and 151,312.77 is: 208,806.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,639.91 : 384,512.81 = 151,312.77 : x
  2. Step 2: Convert to fraction form
    278,639.91/384,512.81 = 151,312.77/x
  3. Step 3: Cross multiply
    278,639.91x = 384,512.81 × 151,312.77
  4. Step 4: Simplify right side
    278,639.91x = 58,181,697,625.02
  5. Step 5: Solve for x
    x = 58,181,697,625.02/278,639.91
  6. Step 6: Final answer
    x = 208,806.05

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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.