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Finding the Fourth Proportional to 525,347.31, 788,021.55 and 146,268.88

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Solution

The fourth proportional to 525,347.31, 788,021.55 and 146,268.88 is: 219,403.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,347.31 : 788,021.55 = 146,268.88 : x
  2. Step 2: Convert to fraction form
    525,347.31/788,021.55 = 146,268.88/x
  3. Step 3: Cross multiply
    525,347.31x = 788,021.55 × 146,268.88
  4. Step 4: Simplify right side
    525,347.31x = 115,263,027,564.31
  5. Step 5: Solve for x
    x = 115,263,027,564.31/525,347.31
  6. Step 6: Final answer
    x = 219,403.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.