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Finding the Fourth Proportional to 278,465.34, 384,282.52 and 151,140.96

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Solution

The fourth proportional to 278,465.34, 384,282.52 and 151,140.96 is: 208,574.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,465.34 : 384,282.52 = 151,140.96 : x
  2. Step 2: Convert to fraction form
    278,465.34/384,282.52 = 151,140.96/x
  3. Step 3: Cross multiply
    278,465.34x = 384,282.52 × 151,140.96
  4. Step 4: Simplify right side
    278,465.34x = 58,080,828,984.02
  5. Step 5: Solve for x
    x = 58,080,828,984.02/278,465.34
  6. Step 6: Final answer
    x = 208,574.72

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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.