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Finding the Fourth Proportional to 288,038.88, 432,128 and 108,125.92

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Solution

The fourth proportional to 288,038.88, 432,128 and 108,125.92 is: 162,215.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,038.88 : 432,128 = 108,125.92 : x
  2. Step 2: Convert to fraction form
    288,038.88/432,128 = 108,125.92/x
  3. Step 3: Cross multiply
    288,038.88x = 432,128 × 108,125.92
  4. Step 4: Simplify right side
    288,038.88x = 46,724,237,557.76
  5. Step 5: Solve for x
    x = 46,724,237,557.76/288,038.88
  6. Step 6: Final answer
    x = 162,215.04

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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.