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Finding the Fourth Proportional to 346,668.64, 520,054.80 and 146,989.60

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Solution

The fourth proportional to 346,668.64, 520,054.80 and 146,989.60 is: 220,506.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,668.64 : 520,054.80 = 146,989.60 : x
  2. Step 2: Convert to fraction form
    346,668.64/520,054.80 = 146,989.60/x
  3. Step 3: Cross multiply
    346,668.64x = 520,054.80 × 146,989.60
  4. Step 4: Simplify right side
    346,668.64x = 76,442,647,030.08
  5. Step 5: Solve for x
    x = 76,442,647,030.08/346,668.64
  6. Step 6: Final answer
    x = 220,506.38

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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.