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Finding the Fourth Proportional to 525,751.81, 725,779.70 and 307,930.26

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Solution

The fourth proportional to 525,751.81, 725,779.70 and 307,930.26 is: 425,085.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,751.81 : 725,779.70 = 307,930.26 : x
  2. Step 2: Convert to fraction form
    525,751.81/725,779.70 = 307,930.26/x
  3. Step 3: Cross multiply
    525,751.81x = 725,779.70 × 307,930.26
  4. Step 4: Simplify right side
    525,751.81x = 223,489,531,723.72
  5. Step 5: Solve for x
    x = 223,489,531,723.72/525,751.81
  6. Step 6: Final answer
    x = 425,085.62

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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.