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Finding the Fourth Proportional to 256,673.61, 385,007.99 and 69,685.11

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Solution

The fourth proportional to 256,673.61, 385,007.99 and 69,685.11 is: 104,527.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,673.61 : 385,007.99 = 69,685.11 : x
  2. Step 2: Convert to fraction form
    256,673.61/385,007.99 = 69,685.11/x
  3. Step 3: Cross multiply
    256,673.61x = 385,007.99 × 69,685.11
  4. Step 4: Simplify right side
    256,673.61x = 26,829,323,785.60
  5. Step 5: Solve for x
    x = 26,829,323,785.60/256,673.61
  6. Step 6: Final answer
    x = 104,527.01

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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.