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Finding the Fourth Proportional to 292,438.86, 438,673.88 and 92,775.22

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Solution

The fourth proportional to 292,438.86, 438,673.88 and 92,775.22 is: 139,167.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,438.86 : 438,673.88 = 92,775.22 : x
  2. Step 2: Convert to fraction form
    292,438.86/438,673.88 = 92,775.22/x
  3. Step 3: Cross multiply
    292,438.86x = 438,673.88 × 92,775.22
  4. Step 4: Simplify right side
    292,438.86x = 40,698,065,725.25
  5. Step 5: Solve for x
    x = 40,698,065,725.25/292,438.86
  6. Step 6: Final answer
    x = 139,167.78

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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.