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Finding the Fourth Proportional to 346,171.95, 518,351.40 and 278,343.45

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Solution

The fourth proportional to 346,171.95, 518,351.40 and 278,343.45 is: 416,786.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,171.95 : 518,351.40 = 278,343.45 : x
  2. Step 2: Convert to fraction form
    346,171.95/518,351.40 = 278,343.45/x
  3. Step 3: Cross multiply
    346,171.95x = 518,351.40 × 278,343.45
  4. Step 4: Simplify right side
    346,171.95x = 144,279,716,988.33
  5. Step 5: Solve for x
    x = 144,279,716,988.33/346,171.95
  6. Step 6: Final answer
    x = 416,786.27

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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.