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Finding the Fourth Proportional to 438,004.49, 604,391.30 and 256,674.86

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Solution

The fourth proportional to 438,004.49, 604,391.30 and 256,674.86 is: 354,179.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,004.49 : 604,391.30 = 256,674.86 : x
  2. Step 2: Convert to fraction form
    438,004.49/604,391.30 = 256,674.86/x
  3. Step 3: Cross multiply
    438,004.49x = 604,391.30 × 256,674.86
  4. Step 4: Simplify right side
    438,004.49x = 155,132,049,290.76
  5. Step 5: Solve for x
    x = 155,132,049,290.76/438,004.49
  6. Step 6: Final answer
    x = 354,179.13

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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.