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Finding the Fourth Proportional to 186,400, 279,602.16 and 46,159.84

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Solution

The fourth proportional to 186,400, 279,602.16 and 46,159.84 is: 69,240.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,400 : 279,602.16 = 46,159.84 : x
  2. Step 2: Convert to fraction form
    186,400/279,602.16 = 46,159.84/x
  3. Step 3: Cross multiply
    186,400x = 279,602.16 × 46,159.84
  4. Step 4: Simplify right side
    186,400x = 12,906,390,969.25
  5. Step 5: Solve for x
    x = 12,906,390,969.25/186,400
  6. Step 6: Final answer
    x = 69,240.29

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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.