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Finding the Fourth Proportional to 399,398.44, 598,931.10 and 162,580.36

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Solution

The fourth proportional to 399,398.44, 598,931.10 and 162,580.36 is: 243,802.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,398.44 : 598,931.10 = 162,580.36 : x
  2. Step 2: Convert to fraction form
    399,398.44/598,931.10 = 162,580.36/x
  3. Step 3: Cross multiply
    399,398.44x = 598,931.10 × 162,580.36
  4. Step 4: Simplify right side
    399,398.44x = 97,374,433,853.20
  5. Step 5: Solve for x
    x = 97,374,433,853.20/399,398.44
  6. Step 6: Final answer
    x = 243,802.74

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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.