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Finding the Fourth Proportional to 279,973.70, 386,364.09 and 152,649.29

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Solution

The fourth proportional to 279,973.70, 386,364.09 and 152,649.29 is: 210,656.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,973.70 : 386,364.09 = 152,649.29 : x
  2. Step 2: Convert to fraction form
    279,973.70/386,364.09 = 152,649.29/x
  3. Step 3: Cross multiply
    279,973.70x = 386,364.09 × 152,649.29
  4. Step 4: Simplify right side
    279,973.70x = 58,978,202,088.18
  5. Step 5: Solve for x
    x = 58,978,202,088.18/279,973.70
  6. Step 6: Final answer
    x = 210,656.23

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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.