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Finding the Fourth Proportional to 553,552.20, 830,522.70 and 238,105.80

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Solution

The fourth proportional to 553,552.20, 830,522.70 and 238,105.80 is: 357,242.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,552.20 : 830,522.70 = 238,105.80 : x
  2. Step 2: Convert to fraction form
    553,552.20/830,522.70 = 238,105.80/x
  3. Step 3: Cross multiply
    553,552.20x = 830,522.70 × 238,105.80
  4. Step 4: Simplify right side
    553,552.20x = 197,752,271,901.66
  5. Step 5: Solve for x
    x = 197,752,271,901.66/553,552.20
  6. Step 6: Final answer
    x = 357,242.32

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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.