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Finding the Fourth Proportional to 553,819.60, 830,686.20 and 216,794.80

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Solution

The fourth proportional to 553,819.60, 830,686.20 and 216,794.80 is: 325,175.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,819.60 : 830,686.20 = 216,794.80 : x
  2. Step 2: Convert to fraction form
    553,819.60/830,686.20 = 216,794.80/x
  3. Step 3: Cross multiply
    553,819.60x = 830,686.20 × 216,794.80
  4. Step 4: Simplify right side
    553,819.60x = 180,088,448,591.76
  5. Step 5: Solve for x
    x = 180,088,448,591.76/553,819.60
  6. Step 6: Final answer
    x = 325,175.29

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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.