Home / 279,460.68-385,643.64-152,136.72

Finding the Fourth Proportional to 279,460.68, 385,643.64 and 152,136.72

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Solution

The fourth proportional to 279,460.68, 385,643.64 and 152,136.72 is: 209,942.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,460.68 : 385,643.64 = 152,136.72 : x
  2. Step 2: Convert to fraction form
    279,460.68/385,643.64 = 152,136.72/x
  3. Step 3: Cross multiply
    279,460.68x = 385,643.64 × 152,136.72
  4. Step 4: Simplify right side
    279,460.68x = 58,670,558,478.46
  5. Step 5: Solve for x
    x = 58,670,558,478.46/279,460.68
  6. Step 6: Final answer
    x = 209,942.09

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1.5x scale

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.