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Finding the Fourth Proportional to 284,794.72, 393,018.72 and 155,733.76

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Solution

The fourth proportional to 284,794.72, 393,018.72 and 155,733.76 is: 214,913.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,794.72 : 393,018.72 = 155,733.76 : x
  2. Step 2: Convert to fraction form
    284,794.72/393,018.72 = 155,733.76/x
  3. Step 3: Cross multiply
    284,794.72x = 393,018.72 × 155,733.76
  4. Step 4: Simplify right side
    284,794.72x = 61,206,283,015.99
  5. Step 5: Solve for x
    x = 61,206,283,015.99/284,794.72
  6. Step 6: Final answer
    x = 214,913.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.