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Finding the Fourth Proportional to 279,459, 385,653.42 and 152,127

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Solution

The fourth proportional to 279,459, 385,653.42 and 152,127 is: 209,935.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,459 : 385,653.42 = 152,127 : x
  2. Step 2: Convert to fraction form
    279,459/385,653.42 = 152,127/x
  3. Step 3: Cross multiply
    279,459x = 385,653.42 × 152,127
  4. Step 4: Simplify right side
    279,459x = 58,668,297,824.34
  5. Step 5: Solve for x
    x = 58,668,297,824.34/279,459
  6. Step 6: Final answer
    x = 209,935.26

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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.