Home / 288,664.13-432,945.16-78,318.47

Finding the Fourth Proportional to 288,664.13, 432,945.16 and 78,318.47

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Solution

The fourth proportional to 288,664.13, 432,945.16 and 78,318.47 is: 117,463.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,664.13 : 432,945.16 = 78,318.47 : x
  2. Step 2: Convert to fraction form
    288,664.13/432,945.16 = 78,318.47/x
  3. Step 3: Cross multiply
    288,664.13x = 432,945.16 × 78,318.47
  4. Step 4: Simplify right side
    288,664.13x = 33,907,602,525.11
  5. Step 5: Solve for x
    x = 33,907,602,525.11/288,664.13
  6. Step 6: Final answer
    x = 117,463.86

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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.