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Finding the Fourth Proportional to 553,839.60, 830,716.20 and 216,814.80

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Solution

The fourth proportional to 553,839.60, 830,716.20 and 216,814.80 is: 325,205.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,839.60 : 830,716.20 = 216,814.80 : x
  2. Step 2: Convert to fraction form
    553,839.60/830,716.20 = 216,814.80/x
  3. Step 3: Cross multiply
    553,839.60x = 830,716.20 × 216,814.80
  4. Step 4: Simplify right side
    553,839.60x = 180,111,566,759.76
  5. Step 5: Solve for x
    x = 180,111,566,759.76/553,839.60
  6. Step 6: Final answer
    x = 325,205.29

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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.