Home / 388,356.95-582,623.64-118,509.21

Finding the Fourth Proportional to 388,356.95, 582,623.64 and 118,509.21

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Solution

The fourth proportional to 388,356.95, 582,623.64 and 118,509.21 is: 177,790.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,356.95 : 582,623.64 = 118,509.21 : x
  2. Step 2: Convert to fraction form
    388,356.95/582,623.64 = 118,509.21/x
  3. Step 3: Cross multiply
    388,356.95x = 582,623.64 × 118,509.21
  4. Step 4: Simplify right side
    388,356.95x = 69,046,267,303.72
  5. Step 5: Solve for x
    x = 69,046,267,303.72/388,356.95
  6. Step 6: Final answer
    x = 177,790.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.