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Finding the Fourth Proportional to 228,646.04, 315,527.26 and 138,005.82

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Solution

The fourth proportional to 228,646.04, 315,527.26 and 138,005.82 is: 190,445.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,646.04 : 315,527.26 = 138,005.82 : x
  2. Step 2: Convert to fraction form
    228,646.04/315,527.26 = 138,005.82/x
  3. Step 3: Cross multiply
    228,646.04x = 315,527.26 × 138,005.82
  4. Step 4: Simplify right side
    228,646.04x = 43,544,598,347.44
  5. Step 5: Solve for x
    x = 43,544,598,347.44/228,646.04
  6. Step 6: Final answer
    x = 190,445.45

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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.