Home / 210,406.14-315,606.65-142,770.61

Finding the Fourth Proportional to 210,406.14, 315,606.65 and 142,770.61

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Solution

The fourth proportional to 210,406.14, 315,606.65 and 142,770.61 is: 214,154.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,406.14 : 315,606.65 = 142,770.61 : x
  2. Step 2: Convert to fraction form
    210,406.14/315,606.65 = 142,770.61/x
  3. Step 3: Cross multiply
    210,406.14x = 315,606.65 × 142,770.61
  4. Step 4: Simplify right side
    210,406.14x = 45,059,353,272.46
  5. Step 5: Solve for x
    x = 45,059,353,272.46/210,406.14
  6. Step 6: Final answer
    x = 214,154.17

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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.