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Finding the Fourth Proportional to 551,537.09, 761,038.30 and 309,773.35

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Solution

The fourth proportional to 551,537.09, 761,038.30 and 309,773.35 is: 427,440.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,537.09 : 761,038.30 = 309,773.35 : x
  2. Step 2: Convert to fraction form
    551,537.09/761,038.30 = 309,773.35/x
  3. Step 3: Cross multiply
    551,537.09x = 761,038.30 × 309,773.35
  4. Step 4: Simplify right side
    551,537.09x = 235,749,383,669.31
  5. Step 5: Solve for x
    x = 235,749,383,669.31/551,537.09
  6. Step 6: Final answer
    x = 427,440.67

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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.