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Finding the Fourth Proportional to 373,128, 514,916.64 and 203,362.53

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Solution

The fourth proportional to 373,128, 514,916.64 and 203,362.53 is: 280,640.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,128 : 514,916.64 = 203,362.53 : x
  2. Step 2: Convert to fraction form
    373,128/514,916.64 = 203,362.53/x
  3. Step 3: Cross multiply
    373,128x = 514,916.64 × 203,362.53
  4. Step 4: Simplify right side
    373,128x = 104,714,750,649.50
  5. Step 5: Solve for x
    x = 104,714,750,649.50/373,128
  6. Step 6: Final answer
    x = 280,640.29

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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.