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Finding the Fourth Proportional to 280,173.78, 386,624.06 and 159,344.46

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Solution

The fourth proportional to 280,173.78, 386,624.06 and 159,344.46 is: 219,886.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,173.78 : 386,624.06 = 159,344.46 : x
  2. Step 2: Convert to fraction form
    280,173.78/386,624.06 = 159,344.46/x
  3. Step 3: Cross multiply
    280,173.78x = 386,624.06 × 159,344.46
  4. Step 4: Simplify right side
    280,173.78x = 61,606,402,063.71
  5. Step 5: Solve for x
    x = 61,606,402,063.71/280,173.78
  6. Step 6: Final answer
    x = 219,886.39

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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.