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Finding the Fourth Proportional to 330,374.95, 455,878.74 and 194,378.98

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Solution

The fourth proportional to 330,374.95, 455,878.74 and 194,378.98 is: 268,220.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,374.95 : 455,878.74 = 194,378.98 : x
  2. Step 2: Convert to fraction form
    330,374.95/455,878.74 = 194,378.98/x
  3. Step 3: Cross multiply
    330,374.95x = 455,878.74 × 194,378.98
  4. Step 4: Simplify right side
    330,374.95x = 88,613,244,484.89
  5. Step 5: Solve for x
    x = 88,613,244,484.89/330,374.95
  6. Step 6: Final answer
    x = 268,220.23

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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.