Home / 279,107.71-385,165.02-151,780.57

Finding the Fourth Proportional to 279,107.71, 385,165.02 and 151,780.57

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Solution

The fourth proportional to 279,107.71, 385,165.02 and 151,780.57 is: 209,455.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,107.71 : 385,165.02 = 151,780.57 : x
  2. Step 2: Convert to fraction form
    279,107.71/385,165.02 = 151,780.57/x
  3. Step 3: Cross multiply
    279,107.71x = 385,165.02 × 151,780.57
  4. Step 4: Simplify right side
    279,107.71x = 58,460,565,316.75
  5. Step 5: Solve for x
    x = 58,460,565,316.75/279,107.71
  6. Step 6: Final answer
    x = 209,455.22

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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.