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Finding the Fourth Proportional to 351,498.10, 526,892.09 and 138,415.54

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Solution

The fourth proportional to 351,498.10, 526,892.09 and 138,415.54 is: 207,483.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,498.10 : 526,892.09 = 138,415.54 : x
  2. Step 2: Convert to fraction form
    351,498.10/526,892.09 = 138,415.54/x
  3. Step 3: Cross multiply
    351,498.10x = 526,892.09 × 138,415.54
  4. Step 4: Simplify right side
    351,498.10x = 72,930,053,159.08
  5. Step 5: Solve for x
    x = 72,930,053,159.08/351,498.10
  6. Step 6: Final answer
    x = 207,483.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.