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Finding the Fourth Proportional to 291,282.57, 436,929.32 and 80,925.98

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Solution

The fourth proportional to 291,282.57, 436,929.32 and 80,925.98 is: 121,390.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,282.57 : 436,929.32 = 80,925.98 : x
  2. Step 2: Convert to fraction form
    291,282.57/436,929.32 = 80,925.98/x
  3. Step 3: Cross multiply
    291,282.57x = 436,929.32 × 80,925.98
  4. Step 4: Simplify right side
    291,282.57x = 35,358,930,822.46
  5. Step 5: Solve for x
    x = 35,358,930,822.46/291,282.57
  6. Step 6: Final answer
    x = 121,390.48

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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.