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Finding the Fourth Proportional to 279,809.31, 386,125.59 and 152,482.17

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Solution

The fourth proportional to 279,809.31, 386,125.59 and 152,482.17 is: 210,419.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,809.31 : 386,125.59 = 152,482.17 : x
  2. Step 2: Convert to fraction form
    279,809.31/386,125.59 = 152,482.17/x
  3. Step 3: Cross multiply
    279,809.31x = 386,125.59 × 152,482.17
  4. Step 4: Simplify right side
    279,809.31x = 58,877,267,855.73
  5. Step 5: Solve for x
    x = 58,877,267,855.73/279,809.31
  6. Step 6: Final answer
    x = 210,419.26

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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.