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Finding the Fourth Proportional to 402,629.34, 555,639.24 and 218,880.30

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Solution

The fourth proportional to 402,629.34, 555,639.24 and 218,880.30 is: 302,060.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,629.34 : 555,639.24 = 218,880.30 : x
  2. Step 2: Convert to fraction form
    402,629.34/555,639.24 = 218,880.30/x
  3. Step 3: Cross multiply
    402,629.34x = 555,639.24 × 218,880.30
  4. Step 4: Simplify right side
    402,629.34x = 121,618,483,542.97
  5. Step 5: Solve for x
    x = 121,618,483,542.97/402,629.34
  6. Step 6: Final answer
    x = 302,060.66

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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.