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Finding the Fourth Proportional to 500,639.31, 751,005 and 163,681.74

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Solution

The fourth proportional to 500,639.31, 751,005 and 163,681.74 is: 245,537.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,639.31 : 751,005 = 163,681.74 : x
  2. Step 2: Convert to fraction form
    500,639.31/751,005 = 163,681.74/x
  3. Step 3: Cross multiply
    500,639.31x = 751,005 × 163,681.74
  4. Step 4: Simplify right side
    500,639.31x = 122,925,805,148.70
  5. Step 5: Solve for x
    x = 122,925,805,148.70/500,639.31
  6. Step 6: Final answer
    x = 245,537.66

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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.