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Finding the Fourth Proportional to 292,745.12, 403,989.72 and 158,609.12

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Solution

The fourth proportional to 292,745.12, 403,989.72 and 158,609.12 is: 218,881.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,745.12 : 403,989.72 = 158,609.12 : x
  2. Step 2: Convert to fraction form
    292,745.12/403,989.72 = 158,609.12/x
  3. Step 3: Cross multiply
    292,745.12x = 403,989.72 × 158,609.12
  4. Step 4: Simplify right side
    292,745.12x = 64,076,453,978.25
  5. Step 5: Solve for x
    x = 64,076,453,978.25/292,745.12
  6. Step 6: Final answer
    x = 218,881.37

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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.