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Finding the Fourth Proportional to 287,887.95, 397,297.40 and 158,825.79

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Solution

The fourth proportional to 287,887.95, 397,297.40 and 158,825.79 is: 219,186.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,887.95 : 397,297.40 = 158,825.79 : x
  2. Step 2: Convert to fraction form
    287,887.95/397,297.40 = 158,825.79/x
  3. Step 3: Cross multiply
    287,887.95x = 397,297.40 × 158,825.79
  4. Step 4: Simplify right side
    287,887.95x = 63,101,072,625.82
  5. Step 5: Solve for x
    x = 63,101,072,625.82/287,887.95
  6. Step 6: Final answer
    x = 219,186.22

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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.