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Finding the Fourth Proportional to 256,946.02, 385,429.56 and 69,957.52

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Solution

The fourth proportional to 256,946.02, 385,429.56 and 69,957.52 is: 104,939.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,946.02 : 385,429.56 = 69,957.52 : x
  2. Step 2: Convert to fraction form
    256,946.02/385,429.56 = 69,957.52/x
  3. Step 3: Cross multiply
    256,946.02x = 385,429.56 × 69,957.52
  4. Step 4: Simplify right side
    256,946.02x = 26,963,696,152.29
  5. Step 5: Solve for x
    x = 26,963,696,152.29/256,946.02
  6. Step 6: Final answer
    x = 104,939.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.