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Finding the Fourth Proportional to 253,345.30, 349,611.11 and 138,623.48

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Solution

The fourth proportional to 253,345.30, 349,611.11 and 138,623.48 is: 191,297.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,345.30 : 349,611.11 = 138,623.48 : x
  2. Step 2: Convert to fraction form
    253,345.30/349,611.11 = 138,623.48/x
  3. Step 3: Cross multiply
    253,345.30x = 349,611.11 × 138,623.48
  4. Step 4: Simplify right side
    253,345.30x = 48,464,308,714.86
  5. Step 5: Solve for x
    x = 48,464,308,714.86/253,345.30
  6. Step 6: Final answer
    x = 191,297.45

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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.