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Finding the Fourth Proportional to 303,312.45, 455,132.70 and 125,837.40

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Solution

The fourth proportional to 303,312.45, 455,132.70 and 125,837.40 is: 188,824.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,312.45 : 455,132.70 = 125,837.40 : x
  2. Step 2: Convert to fraction form
    303,312.45/455,132.70 = 125,837.40/x
  3. Step 3: Cross multiply
    303,312.45x = 455,132.70 × 125,837.40
  4. Step 4: Simplify right side
    303,312.45x = 57,272,715,622.98
  5. Step 5: Solve for x
    x = 57,272,715,622.98/303,312.45
  6. Step 6: Final answer
    x = 188,824.15

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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.