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Finding the Fourth Proportional to 330,502.68, 455,925.81 and 215,848.43

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Solution

The fourth proportional to 330,502.68, 455,925.81 and 215,848.43 is: 297,761.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,502.68 : 455,925.81 = 215,848.43 : x
  2. Step 2: Convert to fraction form
    330,502.68/455,925.81 = 215,848.43/x
  3. Step 3: Cross multiply
    330,502.68x = 455,925.81 × 215,848.43
  4. Step 4: Simplify right side
    330,502.68x = 98,410,870,524.50
  5. Step 5: Solve for x
    x = 98,410,870,524.50/330,502.68
  6. Step 6: Final answer
    x = 297,761.19

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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.