Home / 400,809.20-553,116.40-219,520.26

Finding the Fourth Proportional to 400,809.20, 553,116.40 and 219,520.26

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Solution

The fourth proportional to 400,809.20, 553,116.40 and 219,520.26 is: 302,937.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,809.20 : 553,116.40 = 219,520.26 : x
  2. Step 2: Convert to fraction form
    400,809.20/553,116.40 = 219,520.26/x
  3. Step 3: Cross multiply
    400,809.20x = 553,116.40 × 219,520.26
  4. Step 4: Simplify right side
    400,809.20x = 121,420,255,389.46
  5. Step 5: Solve for x
    x = 121,420,255,389.46/400,809.20
  6. Step 6: Final answer
    x = 302,937.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.