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Finding the Fourth Proportional to 279,292.32, 385,411.80 and 151,967.88

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Solution

The fourth proportional to 279,292.32, 385,411.80 and 151,967.88 is: 209,709.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,292.32 : 385,411.80 = 151,967.88 : x
  2. Step 2: Convert to fraction form
    279,292.32/385,411.80 = 151,967.88/x
  3. Step 3: Cross multiply
    279,292.32x = 385,411.80 × 151,967.88
  4. Step 4: Simplify right side
    279,292.32x = 58,570,214,172.98
  5. Step 5: Solve for x
    x = 58,570,214,172.98/279,292.32
  6. Step 6: Final answer
    x = 209,709.36

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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.