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Finding the Fourth Proportional to 399,455.40, 598,672.80 and 162,530.40

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Solution

The fourth proportional to 399,455.40, 598,672.80 and 162,530.40 is: 243,587.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,455.40 : 598,672.80 = 162,530.40 : x
  2. Step 2: Convert to fraction form
    399,455.40/598,672.80 = 162,530.40/x
  3. Step 3: Cross multiply
    399,455.40x = 598,672.80 × 162,530.40
  4. Step 4: Simplify right side
    399,455.40x = 97,302,529,653.12
  5. Step 5: Solve for x
    x = 97,302,529,653.12/399,455.40
  6. Step 6: Final answer
    x = 243,587.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.