Home / 278,690.47-417,972.76-128,848.93

Finding the Fourth Proportional to 278,690.47, 417,972.76 and 128,848.93

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Solution

The fourth proportional to 278,690.47, 417,972.76 and 128,848.93 is: 193,244.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,690.47 : 417,972.76 = 128,848.93 : x
  2. Step 2: Convert to fraction form
    278,690.47/417,972.76 = 128,848.93/x
  3. Step 3: Cross multiply
    278,690.47x = 417,972.76 × 128,848.93
  4. Step 4: Simplify right side
    278,690.47x = 53,855,341,528.09
  5. Step 5: Solve for x
    x = 53,855,341,528.09/278,690.47
  6. Step 6: Final answer
    x = 193,244.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.