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Finding the Fourth Proportional to 218,655.45, 301,641.41 and 127,955.81

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Solution

The fourth proportional to 218,655.45, 301,641.41 and 127,955.81 is: 176,518.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,655.45 : 301,641.41 = 127,955.81 : x
  2. Step 2: Convert to fraction form
    218,655.45/301,641.41 = 127,955.81/x
  3. Step 3: Cross multiply
    218,655.45x = 301,641.41 × 127,955.81
  4. Step 4: Simplify right side
    218,655.45x = 38,596,768,798.11
  5. Step 5: Solve for x
    x = 38,596,768,798.11/218,655.45
  6. Step 6: Final answer
    x = 176,518.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.