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Finding the Fourth Proportional to 279,812.61, 386,141.40 and 152,488.17

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Solution

The fourth proportional to 279,812.61, 386,141.40 and 152,488.17 is: 210,433.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,812.61 : 386,141.40 = 152,488.17 : x
  2. Step 2: Convert to fraction form
    279,812.61/386,141.40 = 152,488.17/x
  3. Step 3: Cross multiply
    279,812.61x = 386,141.40 × 152,488.17
  4. Step 4: Simplify right side
    279,812.61x = 58,881,995,447.24
  5. Step 5: Solve for x
    x = 58,881,995,447.24/279,812.61
  6. Step 6: Final answer
    x = 210,433.67

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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.