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Finding the Fourth Proportional to 660,346.34, 990,471.06 and 210,946.52

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Solution

The fourth proportional to 660,346.34, 990,471.06 and 210,946.52 is: 316,404.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,346.34 : 990,471.06 = 210,946.52 : x
  2. Step 2: Convert to fraction form
    660,346.34/990,471.06 = 210,946.52/x
  3. Step 3: Cross multiply
    660,346.34x = 990,471.06 × 210,946.52
  4. Step 4: Simplify right side
    660,346.34x = 208,936,425,743.89
  5. Step 5: Solve for x
    x = 208,936,425,743.89/660,346.34
  6. Step 6: Final answer
    x = 316,404.31

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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.