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Finding the Fourth Proportional to 297,220.70, 445,831.05 and 83,988.20

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Solution

The fourth proportional to 297,220.70, 445,831.05 and 83,988.20 is: 125,982.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,220.70 : 445,831.05 = 83,988.20 : x
  2. Step 2: Convert to fraction form
    297,220.70/445,831.05 = 83,988.20/x
  3. Step 3: Cross multiply
    297,220.70x = 445,831.05 × 83,988.20
  4. Step 4: Simplify right side
    297,220.70x = 37,444,547,393.61
  5. Step 5: Solve for x
    x = 37,444,547,393.61/297,220.70
  6. Step 6: Final answer
    x = 125,982.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.