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Finding the Fourth Proportional to 353,389.52, 488,102.28 and 257,744.72

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Solution

The fourth proportional to 353,389.52, 488,102.28 and 257,744.72 is: 355,997.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,389.52 : 488,102.28 = 257,744.72 : x
  2. Step 2: Convert to fraction form
    353,389.52/488,102.28 = 257,744.72/x
  3. Step 3: Cross multiply
    353,389.52x = 488,102.28 × 257,744.72
  4. Step 4: Simplify right side
    353,389.52x = 125,805,785,489.96
  5. Step 5: Solve for x
    x = 125,805,785,489.96/353,389.52
  6. Step 6: Final answer
    x = 355,997.50

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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.