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Finding the Fourth Proportional to 287,950.60, 397,349.96 and 158,894.21

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Solution

The fourth proportional to 287,950.60, 397,349.96 and 158,894.21 is: 219,261.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,950.60 : 397,349.96 = 158,894.21 : x
  2. Step 2: Convert to fraction form
    287,950.60/397,349.96 = 158,894.21/x
  3. Step 3: Cross multiply
    287,950.60x = 397,349.96 × 158,894.21
  4. Step 4: Simplify right side
    287,950.60x = 63,136,605,951.54
  5. Step 5: Solve for x
    x = 63,136,605,951.54/287,950.60
  6. Step 6: Final answer
    x = 219,261.94

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1.5x scale

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.