Home / 284,858.10-393,089.51-155,771.45

Finding the Fourth Proportional to 284,858.10, 393,089.51 and 155,771.45

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Solution

The fourth proportional to 284,858.10, 393,089.51 and 155,771.45 is: 214,956.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,858.10 : 393,089.51 = 155,771.45 : x
  2. Step 2: Convert to fraction form
    284,858.10/393,089.51 = 155,771.45/x
  3. Step 3: Cross multiply
    284,858.10x = 393,089.51 × 155,771.45
  4. Step 4: Simplify right side
    284,858.10x = 61,232,120,208.18
  5. Step 5: Solve for x
    x = 61,232,120,208.18/284,858.10
  6. Step 6: Final answer
    x = 214,956.57

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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.