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Finding the Fourth Proportional to 253,445.45, 349,715.76 and 145,994.50

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Solution

The fourth proportional to 253,445.45, 349,715.76 and 145,994.50 is: 201,449.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,445.45 : 349,715.76 = 145,994.50 : x
  2. Step 2: Convert to fraction form
    253,445.45/349,715.76 = 145,994.50/x
  3. Step 3: Cross multiply
    253,445.45x = 349,715.76 × 145,994.50
  4. Step 4: Simplify right side
    253,445.45x = 51,056,575,774.74
  5. Step 5: Solve for x
    x = 51,056,575,774.74/253,445.45
  6. Step 6: Final answer
    x = 201,449.96

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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.