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Finding the Fourth Proportional to 253,152.32, 349,357.20 and 139,979.12

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Solution

The fourth proportional to 253,152.32, 349,357.20 and 139,979.12 is: 193,175.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,152.32 : 349,357.20 = 139,979.12 : x
  2. Step 2: Convert to fraction form
    253,152.32/349,357.20 = 139,979.12/x
  3. Step 3: Cross multiply
    253,152.32x = 349,357.20 × 139,979.12
  4. Step 4: Simplify right side
    253,152.32x = 48,902,713,421.66
  5. Step 5: Solve for x
    x = 48,902,713,421.66/253,152.32
  6. Step 6: Final answer
    x = 193,175.06

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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.