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Finding the Fourth Proportional to 279,686.77, 385,964.26 and 152,359.63

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Solution

The fourth proportional to 279,686.77, 385,964.26 and 152,359.63 is: 210,254.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,686.77 : 385,964.26 = 152,359.63 : x
  2. Step 2: Convert to fraction form
    279,686.77/385,964.26 = 152,359.63/x
  3. Step 3: Cross multiply
    279,686.77x = 385,964.26 × 152,359.63
  4. Step 4: Simplify right side
    279,686.77x = 58,805,371,846.82
  5. Step 5: Solve for x
    x = 58,805,371,846.82/279,686.77
  6. Step 6: Final answer
    x = 210,254.39

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1.5x scale

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.