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Finding the Fourth Proportional to 279,809.52, 386,127.36 and 152,482.56

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Solution

The fourth proportional to 279,809.52, 386,127.36 and 152,482.56 is: 210,420.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,809.52 : 386,127.36 = 152,482.56 : x
  2. Step 2: Convert to fraction form
    279,809.52/386,127.36 = 152,482.56/x
  3. Step 3: Cross multiply
    279,809.52x = 386,127.36 × 152,482.56
  4. Step 4: Simplify right side
    279,809.52x = 58,877,688,338.84
  5. Step 5: Solve for x
    x = 58,877,688,338.84/279,809.52
  6. Step 6: Final answer
    x = 210,420.60

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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.