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Finding the Fourth Proportional to 612,842.30, 919,267.52 and 213,490.62

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Solution

The fourth proportional to 612,842.30, 919,267.52 and 213,490.62 is: 320,237.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,842.30 : 919,267.52 = 213,490.62 : x
  2. Step 2: Convert to fraction form
    612,842.30/919,267.52 = 213,490.62/x
  3. Step 3: Cross multiply
    612,842.30x = 919,267.52 × 213,490.62
  4. Step 4: Simplify right side
    612,842.30x = 196,254,992,790.66
  5. Step 5: Solve for x
    x = 196,254,992,790.66/612,842.30
  6. Step 6: Final answer
    x = 320,237.35

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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.