Home / 319,291.35-478,395.01-192,665.49

Finding the Fourth Proportional to 319,291.35, 478,395.01 and 192,665.49

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Solution

The fourth proportional to 319,291.35, 478,395.01 and 192,665.49 is: 288,671.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,291.35 : 478,395.01 = 192,665.49 : x
  2. Step 2: Convert to fraction form
    319,291.35/478,395.01 = 192,665.49/x
  3. Step 3: Cross multiply
    319,291.35x = 478,395.01 × 192,665.49
  4. Step 4: Simplify right side
    319,291.35x = 92,170,209,015.20
  5. Step 5: Solve for x
    x = 92,170,209,015.20/319,291.35
  6. Step 6: Final answer
    x = 288,671.17

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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.