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Finding the Fourth Proportional to 607,903.94, 911,874.33 and 208,538.93

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Solution

The fourth proportional to 607,903.94, 911,874.33 and 208,538.93 is: 312,814.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,903.94 : 911,874.33 = 208,538.93 : x
  2. Step 2: Convert to fraction form
    607,903.94/911,874.33 = 208,538.93/x
  3. Step 3: Cross multiply
    607,903.94x = 911,874.33 × 208,538.93
  4. Step 4: Simplify right side
    607,903.94x = 190,161,297,374.22
  5. Step 5: Solve for x
    x = 190,161,297,374.22/607,903.94
  6. Step 6: Final answer
    x = 312,814.72

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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.