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Finding the Fourth Proportional to 279,492.98, 385,707.28 and 152,175.56

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Solution

The fourth proportional to 279,492.98, 385,707.28 and 152,175.56 is: 210,006.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,492.98 : 385,707.28 = 152,175.56 : x
  2. Step 2: Convert to fraction form
    279,492.98/385,707.28 = 152,175.56/x
  3. Step 3: Cross multiply
    279,492.98x = 385,707.28 × 152,175.56
  4. Step 4: Simplify right side
    279,492.98x = 58,695,221,330.08
  5. Step 5: Solve for x
    x = 58,695,221,330.08/279,492.98
  6. Step 6: Final answer
    x = 210,006.07

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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.