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Finding the Fourth Proportional to 388,602.95, 582,925.23 and 122,384.21

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Solution

The fourth proportional to 388,602.95, 582,925.23 and 122,384.21 is: 183,582.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,602.95 : 582,925.23 = 122,384.21 : x
  2. Step 2: Convert to fraction form
    388,602.95/582,925.23 = 122,384.21/x
  3. Step 3: Cross multiply
    388,602.95x = 582,925.23 × 122,384.21
  4. Step 4: Simplify right side
    388,602.95x = 71,340,840,847.99
  5. Step 5: Solve for x
    x = 71,340,840,847.99/388,602.95
  6. Step 6: Final answer
    x = 183,582.86

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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.