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Finding the Fourth Proportional to 388,870.44, 585,406.47 and 349,765.86

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Solution

The fourth proportional to 388,870.44, 585,406.47 and 349,765.86 is: 526,538.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,870.44 : 585,406.47 = 349,765.86 : x
  2. Step 2: Convert to fraction form
    388,870.44/585,406.47 = 349,765.86/x
  3. Step 3: Cross multiply
    388,870.44x = 585,406.47 × 349,765.86
  4. Step 4: Simplify right side
    388,870.44x = 204,755,197,429.11
  5. Step 5: Solve for x
    x = 204,755,197,429.11/388,870.44
  6. Step 6: Final answer
    x = 526,538.34

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.