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Finding the Fourth Proportional to 280,499.84, 387,117.78 and 167,322.58

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Solution

The fourth proportional to 280,499.84, 387,117.78 and 167,322.58 is: 230,921.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,499.84 : 387,117.78 = 167,322.58 : x
  2. Step 2: Convert to fraction form
    280,499.84/387,117.78 = 167,322.58/x
  3. Step 3: Cross multiply
    280,499.84x = 387,117.78 × 167,322.58
  4. Step 4: Simplify right side
    280,499.84x = 64,773,545,713.47
  5. Step 5: Solve for x
    x = 64,773,545,713.47/280,499.84
  6. Step 6: Final answer
    x = 230,921.86

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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.