Home / 218,955.12-328,313.46-98,871.36

Finding the Fourth Proportional to 218,955.12, 328,313.46 and 98,871.36

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Solution

The fourth proportional to 218,955.12, 328,313.46 and 98,871.36 is: 148,253.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,955.12 : 328,313.46 = 98,871.36 : x
  2. Step 2: Convert to fraction form
    218,955.12/328,313.46 = 98,871.36/x
  3. Step 3: Cross multiply
    218,955.12x = 328,313.46 × 98,871.36
  4. Step 4: Simplify right side
    218,955.12x = 32,460,798,296.51
  5. Step 5: Solve for x
    x = 32,460,798,296.51/218,955.12
  6. Step 6: Final answer
    x = 148,253.21

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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.