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Finding the Fourth Proportional to 210,978.88, 316,468.31 and 63,234.88

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Solution

The fourth proportional to 210,978.88, 316,468.31 and 63,234.88 is: 94,852.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,978.88 : 316,468.31 = 63,234.88 : x
  2. Step 2: Convert to fraction form
    210,978.88/316,468.31 = 63,234.88/x
  3. Step 3: Cross multiply
    210,978.88x = 316,468.31 × 63,234.88
  4. Step 4: Simplify right side
    210,978.88x = 20,011,835,606.65
  5. Step 5: Solve for x
    x = 20,011,835,606.65/210,978.88
  6. Step 6: Final answer
    x = 94,852.32

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1.5x scale

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.