Home / 278,756.45-384,681.78-151,432.95

Finding the Fourth Proportional to 278,756.45, 384,681.78 and 151,432.95

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Solution

The fourth proportional to 278,756.45, 384,681.78 and 151,432.95 is: 208,976.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,756.45 : 384,681.78 = 151,432.95 : x
  2. Step 2: Convert to fraction form
    278,756.45/384,681.78 = 151,432.95/x
  3. Step 3: Cross multiply
    278,756.45x = 384,681.78 × 151,432.95
  4. Step 4: Simplify right side
    278,756.45x = 58,253,496,756.65
  5. Step 5: Solve for x
    x = 58,253,496,756.65/278,756.45
  6. Step 6: Final answer
    x = 208,976.32

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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.