Home / 278,360.64-384,136.40-151,035.92

Finding the Fourth Proportional to 278,360.64, 384,136.40 and 151,035.92

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Solution

The fourth proportional to 278,360.64, 384,136.40 and 151,035.92 is: 208,428.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,360.64 : 384,136.40 = 151,035.92 : x
  2. Step 2: Convert to fraction form
    278,360.64/384,136.40 = 151,035.92/x
  3. Step 3: Cross multiply
    278,360.64x = 384,136.40 × 151,035.92
  4. Step 4: Simplify right side
    278,360.64x = 58,018,394,579.49
  5. Step 5: Solve for x
    x = 58,018,394,579.49/278,360.64
  6. Step 6: Final answer
    x = 208,428.87

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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.