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Finding the Fourth Proportional to 354,510.71, 489,464.33 and 272,693.67

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Solution

The fourth proportional to 354,510.71, 489,464.33 and 272,693.67 is: 376,501.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,510.71 : 489,464.33 = 272,693.67 : x
  2. Step 2: Convert to fraction form
    354,510.71/489,464.33 = 272,693.67/x
  3. Step 3: Cross multiply
    354,510.71x = 489,464.33 × 272,693.67
  4. Step 4: Simplify right side
    354,510.71x = 133,473,824,481.79
  5. Step 5: Solve for x
    x = 133,473,824,481.79/354,510.71
  6. Step 6: Final answer
    x = 376,501.53

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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.