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Finding the Fourth Proportional to 253,445.40, 349,718.04 and 140,267.88

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Solution

The fourth proportional to 253,445.40, 349,718.04 and 140,267.88 is: 193,549.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,445.40 : 349,718.04 = 140,267.88 : x
  2. Step 2: Convert to fraction form
    253,445.40/349,718.04 = 140,267.88/x
  3. Step 3: Cross multiply
    253,445.40x = 349,718.04 × 140,267.88
  4. Step 4: Simplify right side
    253,445.40x = 49,054,208,068.56
  5. Step 5: Solve for x
    x = 49,054,208,068.56/253,445.40
  6. Step 6: Final answer
    x = 193,549.41

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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.