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Finding the Fourth Proportional to 287,856.60, 397,242.48 and 158,792.16

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Solution

The fourth proportional to 287,856.60, 397,242.48 and 158,792.16 is: 219,133.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,856.60 : 397,242.48 = 158,792.16 : x
  2. Step 2: Convert to fraction form
    287,856.60/397,242.48 = 158,792.16/x
  3. Step 3: Cross multiply
    287,856.60x = 397,242.48 × 158,792.16
  4. Step 4: Simplify right side
    287,856.60x = 63,078,991,442.96
  5. Step 5: Solve for x
    x = 63,078,991,442.96/287,856.60
  6. Step 6: Final answer
    x = 219,133.39

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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.