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Finding the Fourth Proportional to 315,090.51, 434,903.49 and 187,741.50

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Solution

The fourth proportional to 315,090.51, 434,903.49 and 187,741.50 is: 259,130.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,090.51 : 434,903.49 = 187,741.50 : x
  2. Step 2: Convert to fraction form
    315,090.51/434,903.49 = 187,741.50/x
  3. Step 3: Cross multiply
    315,090.51x = 434,903.49 × 187,741.50
  4. Step 4: Simplify right side
    315,090.51x = 81,649,433,567.84
  5. Step 5: Solve for x
    x = 81,649,433,567.84/315,090.51
  6. Step 6: Final answer
    x = 259,130.09

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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.