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Finding the Fourth Proportional to 210,634.52, 315,968.14 and 70,393.64

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Solution

The fourth proportional to 210,634.52, 315,968.14 and 70,393.64 is: 105,595.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,634.52 : 315,968.14 = 70,393.64 : x
  2. Step 2: Convert to fraction form
    210,634.52/315,968.14 = 70,393.64/x
  3. Step 3: Cross multiply
    210,634.52x = 315,968.14 × 70,393.64
  4. Step 4: Simplify right side
    210,634.52x = 22,242,147,498.63
  5. Step 5: Solve for x
    x = 22,242,147,498.63/210,634.52
  6. Step 6: Final answer
    x = 105,595.93

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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.