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Finding the Fourth Proportional to 279,392.46, 385,561.56 and 152,068.98

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Solution

The fourth proportional to 279,392.46, 385,561.56 and 152,068.98 is: 209,855.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,392.46 : 385,561.56 = 152,068.98 : x
  2. Step 2: Convert to fraction form
    279,392.46/385,561.56 = 152,068.98/x
  3. Step 3: Cross multiply
    279,392.46x = 385,561.56 × 152,068.98
  4. Step 4: Simplify right side
    279,392.46x = 58,631,953,156.41
  5. Step 5: Solve for x
    x = 58,631,953,156.41/279,392.46
  6. Step 6: Final answer
    x = 209,855.17

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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.