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Finding the Fourth Proportional to 354,362.06, 489,061.14 and 201,423.20

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Solution

The fourth proportional to 354,362.06, 489,061.14 and 201,423.20 is: 277,987.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,362.06 : 489,061.14 = 201,423.20 : x
  2. Step 2: Convert to fraction form
    354,362.06/489,061.14 = 201,423.20/x
  3. Step 3: Cross multiply
    354,362.06x = 489,061.14 × 201,423.20
  4. Step 4: Simplify right side
    354,362.06x = 98,508,259,814.45
  5. Step 5: Solve for x
    x = 98,508,259,814.45/354,362.06
  6. Step 6: Final answer
    x = 277,987.60

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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.