Home / 279,015.18-385,039.71-151,690.38

Finding the Fourth Proportional to 279,015.18, 385,039.71 and 151,690.38

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Solution

The fourth proportional to 279,015.18, 385,039.71 and 151,690.38 is: 209,332.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,015.18 : 385,039.71 = 151,690.38 : x
  2. Step 2: Convert to fraction form
    279,015.18/385,039.71 = 151,690.38/x
  3. Step 3: Cross multiply
    279,015.18x = 385,039.71 × 151,690.38
  4. Step 4: Simplify right side
    279,015.18x = 58,406,819,924.99
  5. Step 5: Solve for x
    x = 58,406,819,924.99/279,015.18
  6. Step 6: Final answer
    x = 209,332.05

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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.