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Finding the Fourth Proportional to 382,426.56, 527,686.56 and 212,656.32

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Solution

The fourth proportional to 382,426.56, 527,686.56 and 212,656.32 is: 293,431.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,426.56 : 527,686.56 = 212,656.32 : x
  2. Step 2: Convert to fraction form
    382,426.56/527,686.56 = 212,656.32/x
  3. Step 3: Cross multiply
    382,426.56x = 527,686.56 × 212,656.32
  4. Step 4: Simplify right side
    382,426.56x = 112,215,881,963.06
  5. Step 5: Solve for x
    x = 112,215,881,963.06/382,426.56
  6. Step 6: Final answer
    x = 293,431.19

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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.