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Finding the Fourth Proportional to 291,140.80, 436,706.32 and 131,127.73

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Solution

The fourth proportional to 291,140.80, 436,706.32 and 131,127.73 is: 196,689.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,140.80 : 436,706.32 = 131,127.73 : x
  2. Step 2: Convert to fraction form
    291,140.80/436,706.32 = 131,127.73/x
  3. Step 3: Cross multiply
    291,140.80x = 436,706.32 × 131,127.73
  4. Step 4: Simplify right side
    291,140.80x = 57,264,307,490.40
  5. Step 5: Solve for x
    x = 57,264,307,490.40/291,140.80
  6. Step 6: Final answer
    x = 196,689.40

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1.5x scale

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.