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Finding the Fourth Proportional to 384,784.92, 531,014.94 and 215,026.20

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Solution

The fourth proportional to 384,784.92, 531,014.94 and 215,026.20 is: 296,742.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,784.92 : 531,014.94 = 215,026.20 : x
  2. Step 2: Convert to fraction form
    384,784.92/531,014.94 = 215,026.20/x
  3. Step 3: Cross multiply
    384,784.92x = 531,014.94 × 215,026.20
  4. Step 4: Simplify right side
    384,784.92x = 114,182,124,691.43
  5. Step 5: Solve for x
    x = 114,182,124,691.43/384,784.92
  6. Step 6: Final answer
    x = 296,742.72

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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.