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Finding the Fourth Proportional to 284,507.82, 392,624.91 and 157,186.35

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Solution

The fourth proportional to 284,507.82, 392,624.91 and 157,186.35 is: 216,919.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,507.82 : 392,624.91 = 157,186.35 : x
  2. Step 2: Convert to fraction form
    284,507.82/392,624.91 = 157,186.35/x
  3. Step 3: Cross multiply
    284,507.82x = 392,624.91 × 157,186.35
  4. Step 4: Simplify right side
    284,507.82x = 61,715,276,521.98
  5. Step 5: Solve for x
    x = 61,715,276,521.98/284,507.82
  6. Step 6: Final answer
    x = 216,919.44

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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.