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Finding the Fourth Proportional to 354,688.53, 489,342.22 and 273,041.74

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Solution

The fourth proportional to 354,688.53, 489,342.22 and 273,041.74 is: 376,699.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,688.53 : 489,342.22 = 273,041.74 : x
  2. Step 2: Convert to fraction form
    354,688.53/489,342.22 = 273,041.74/x
  3. Step 3: Cross multiply
    354,688.53x = 489,342.22 × 273,041.74
  4. Step 4: Simplify right side
    354,688.53x = 133,610,851,204.26
  5. Step 5: Solve for x
    x = 133,610,851,204.26/354,688.53
  6. Step 6: Final answer
    x = 376,699.10

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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.