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Finding the Fourth Proportional to 388,051.80, 582,077.70 and 361,807.80

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Solution

The fourth proportional to 388,051.80, 582,077.70 and 361,807.80 is: 542,711.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,051.80 : 582,077.70 = 361,807.80 : x
  2. Step 2: Convert to fraction form
    388,051.80/582,077.70 = 361,807.80/x
  3. Step 3: Cross multiply
    388,051.80x = 582,077.70 × 361,807.80
  4. Step 4: Simplify right side
    388,051.80x = 210,600,252,066.06
  5. Step 5: Solve for x
    x = 210,600,252,066.06/388,051.80
  6. Step 6: Final answer
    x = 542,711.70

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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.