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Finding the Fourth Proportional to 253,028.52, 349,180.74 and 138,307.32

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Solution

The fourth proportional to 253,028.52, 349,180.74 and 138,307.32 is: 190,864.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,028.52 : 349,180.74 = 138,307.32 : x
  2. Step 2: Convert to fraction form
    253,028.52/349,180.74 = 138,307.32/x
  3. Step 3: Cross multiply
    253,028.52x = 349,180.74 × 138,307.32
  4. Step 4: Simplify right side
    253,028.52x = 48,294,252,345.02
  5. Step 5: Solve for x
    x = 48,294,252,345.02/253,028.52
  6. Step 6: Final answer
    x = 190,864.86

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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.