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Finding the Fourth Proportional to 280,361.76, 386,853.62 and 165,624.45

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Solution

The fourth proportional to 280,361.76, 386,853.62 and 165,624.45 is: 228,534.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,361.76 : 386,853.62 = 165,624.45 : x
  2. Step 2: Convert to fraction form
    280,361.76/386,853.62 = 165,624.45/x
  3. Step 3: Cross multiply
    280,361.76x = 386,853.62 × 165,624.45
  4. Step 4: Simplify right side
    280,361.76x = 64,072,417,214.89
  5. Step 5: Solve for x
    x = 64,072,417,214.89/280,361.76
  6. Step 6: Final answer
    x = 228,534.79

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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.