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Finding the Fourth Proportional to 398,999.60, 598,526.40 and 162,346.40

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Solution

The fourth proportional to 398,999.60, 598,526.40 and 162,346.40 is: 243,530.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,999.60 : 598,526.40 = 162,346.40 : x
  2. Step 2: Convert to fraction form
    398,999.60/598,526.40 = 162,346.40/x
  3. Step 3: Cross multiply
    398,999.60x = 598,526.40 × 162,346.40
  4. Step 4: Simplify right side
    398,999.60x = 97,168,606,344.96
  5. Step 5: Solve for x
    x = 97,168,606,344.96/398,999.60
  6. Step 6: Final answer
    x = 243,530.59

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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.