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Finding the Fourth Proportional to 384,957.39, 531,244.64 and 212,886.93

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Solution

The fourth proportional to 384,957.39, 531,244.64 and 212,886.93 is: 293,785.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,957.39 : 531,244.64 = 212,886.93 : x
  2. Step 2: Convert to fraction form
    384,957.39/531,244.64 = 212,886.93/x
  3. Step 3: Cross multiply
    384,957.39x = 531,244.64 × 212,886.93
  4. Step 4: Simplify right side
    384,957.39x = 113,095,039,424.12
  5. Step 5: Solve for x
    x = 113,095,039,424.12/384,957.39
  6. Step 6: Final answer
    x = 293,785.86

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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.