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Finding the Fourth Proportional to 660,354.34, 990,483.06 and 210,954.54

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Solution

The fourth proportional to 660,354.34, 990,483.06 and 210,954.54 is: 316,416.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,354.34 : 990,483.06 = 210,954.54 : x
  2. Step 2: Convert to fraction form
    660,354.34/990,483.06 = 210,954.54/x
  3. Step 3: Cross multiply
    660,354.34x = 990,483.06 × 210,954.54
  4. Step 4: Simplify right side
    660,354.34x = 208,946,898,300.09
  5. Step 5: Solve for x
    x = 208,946,898,300.09/660,354.34
  6. Step 6: Final answer
    x = 316,416.33

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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.