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Finding the Fourth Proportional to 354,433.73, 489,156.50 and 216,693.48

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Solution

The fourth proportional to 354,433.73, 489,156.50 and 216,693.48 is: 299,060.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,433.73 : 489,156.50 = 216,693.48 : x
  2. Step 2: Convert to fraction form
    354,433.73/489,156.50 = 216,693.48/x
  3. Step 3: Cross multiply
    354,433.73x = 489,156.50 × 216,693.48
  4. Step 4: Simplify right side
    354,433.73x = 105,997,023,166.15
  5. Step 5: Solve for x
    x = 105,997,023,166.15/354,433.73
  6. Step 6: Final answer
    x = 299,060.20

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1.5x scale

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.