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Finding the Fourth Proportional to 340,289.50, 510,395.34 and 90,990.94

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Solution

The fourth proportional to 340,289.50, 510,395.34 and 90,990.94 is: 136,476.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,289.50 : 510,395.34 = 90,990.94 : x
  2. Step 2: Convert to fraction form
    340,289.50/510,395.34 = 90,990.94/x
  3. Step 3: Cross multiply
    340,289.50x = 510,395.34 × 90,990.94
  4. Step 4: Simplify right side
    340,289.50x = 46,441,351,758.22
  5. Step 5: Solve for x
    x = 46,441,351,758.22/340,289.50
  6. Step 6: Final answer
    x = 136,476.01

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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.