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Finding the Fourth Proportional to 369,564.60, 554,346.90 and 211,663.20

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Solution

The fourth proportional to 369,564.60, 554,346.90 and 211,663.20 is: 317,494.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,564.60 : 554,346.90 = 211,663.20 : x
  2. Step 2: Convert to fraction form
    369,564.60/554,346.90 = 211,663.20/x
  3. Step 3: Cross multiply
    369,564.60x = 554,346.90 × 211,663.20
  4. Step 4: Simplify right side
    369,564.60x = 117,334,838,764.08
  5. Step 5: Solve for x
    x = 117,334,838,764.08/369,564.60
  6. Step 6: Final answer
    x = 317,494.80

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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.