Home / 210,918.24-316,373.70-53,143.20

Finding the Fourth Proportional to 210,918.24, 316,373.70 and 53,143.20

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Solution

The fourth proportional to 210,918.24, 316,373.70 and 53,143.20 is: 79,713.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,918.24 : 316,373.70 = 53,143.20 : x
  2. Step 2: Convert to fraction form
    210,918.24/316,373.70 = 53,143.20/x
  3. Step 3: Cross multiply
    210,918.24x = 316,373.70 × 53,143.20
  4. Step 4: Simplify right side
    210,918.24x = 16,813,110,813.84
  5. Step 5: Solve for x
    x = 16,813,110,813.84/210,918.24
  6. Step 6: Final answer
    x = 79,713.88

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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.