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Finding the Fourth Proportional to 288,620.73, 432,931.09 and 88,941.11

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Solution

The fourth proportional to 288,620.73, 432,931.09 and 88,941.11 is: 133,411.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,620.73 : 432,931.09 = 88,941.11 : x
  2. Step 2: Convert to fraction form
    288,620.73/432,931.09 = 88,941.11/x
  3. Step 3: Cross multiply
    288,620.73x = 432,931.09 × 88,941.11
  4. Step 4: Simplify right side
    288,620.73x = 38,505,373,962.95
  5. Step 5: Solve for x
    x = 38,505,373,962.95/288,620.73
  6. Step 6: Final answer
    x = 133,411.67

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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.