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Finding the Fourth Proportional to 279,290.14, 385,448.76 and 164,605.71

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Solution

The fourth proportional to 279,290.14, 385,448.76 and 164,605.71 is: 227,172.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,290.14 : 385,448.76 = 164,605.71 : x
  2. Step 2: Convert to fraction form
    279,290.14/385,448.76 = 164,605.71/x
  3. Step 3: Cross multiply
    279,290.14x = 385,448.76 × 164,605.71
  4. Step 4: Simplify right side
    279,290.14x = 63,447,066,808.42
  5. Step 5: Solve for x
    x = 63,447,066,808.42/279,290.14
  6. Step 6: Final answer
    x = 227,172.60

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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.