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Finding the Fourth Proportional to 287,802.29, 397,157.36 and 158,745.89

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Solution

The fourth proportional to 287,802.29, 397,157.36 and 158,745.89 is: 219,063.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,802.29 : 397,157.36 = 158,745.89 : x
  2. Step 2: Convert to fraction form
    287,802.29/397,157.36 = 158,745.89/x
  3. Step 3: Cross multiply
    287,802.29x = 397,157.36 × 158,745.89
  4. Step 4: Simplify right side
    287,802.29x = 63,047,095,803.73
  5. Step 5: Solve for x
    x = 63,047,095,803.73/287,802.29
  6. Step 6: Final answer
    x = 219,063.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.