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Finding the Fourth Proportional to 384,773.36, 530,985.92 and 215,007.48

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Solution

The fourth proportional to 384,773.36, 530,985.92 and 215,007.48 is: 296,709.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,773.36 : 530,985.92 = 215,007.48 : x
  2. Step 2: Convert to fraction form
    384,773.36/530,985.92 = 215,007.48/x
  3. Step 3: Cross multiply
    384,773.36x = 530,985.92 × 215,007.48
  4. Step 4: Simplify right side
    384,773.36x = 114,165,944,574.68
  5. Step 5: Solve for x
    x = 114,165,944,574.68/384,773.36
  6. Step 6: Final answer
    x = 296,709.59

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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.