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Finding the Fourth Proportional to 346,747.60, 520,121.40 and 213,194.80

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Solution

The fourth proportional to 346,747.60, 520,121.40 and 213,194.80 is: 319,792.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,747.60 : 520,121.40 = 213,194.80 : x
  2. Step 2: Convert to fraction form
    346,747.60/520,121.40 = 213,194.80/x
  3. Step 3: Cross multiply
    346,747.60x = 520,121.40 × 213,194.80
  4. Step 4: Simplify right side
    346,747.60x = 110,887,177,848.72
  5. Step 5: Solve for x
    x = 110,887,177,848.72/346,747.60
  6. Step 6: Final answer
    x = 319,792.20

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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.