Home / 354,523.03-489,153.23-216,666.70

Finding the Fourth Proportional to 354,523.03, 489,153.23 and 216,666.70

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Solution

The fourth proportional to 354,523.03, 489,153.23 and 216,666.70 is: 298,945.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,523.03 : 489,153.23 = 216,666.70 : x
  2. Step 2: Convert to fraction form
    354,523.03/489,153.23 = 216,666.70/x
  3. Step 3: Cross multiply
    354,523.03x = 489,153.23 × 216,666.70
  4. Step 4: Simplify right side
    354,523.03x = 105,983,214,644.73
  5. Step 5: Solve for x
    x = 105,983,214,644.73/354,523.03
  6. Step 6: Final answer
    x = 298,945.93

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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.