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Finding the Fourth Proportional to 346,551.20, 520,021.20 and 146,837.60

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Solution

The fourth proportional to 346,551.20, 520,021.20 and 146,837.60 is: 220,338.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,551.20 : 520,021.20 = 146,837.60 : x
  2. Step 2: Convert to fraction form
    346,551.20/520,021.20 = 146,837.60/x
  3. Step 3: Cross multiply
    346,551.20x = 520,021.20 × 146,837.60
  4. Step 4: Simplify right side
    346,551.20x = 76,358,664,957.12
  5. Step 5: Solve for x
    x = 76,358,664,957.12/346,551.20
  6. Step 6: Final answer
    x = 220,338.77

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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.