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Finding the Fourth Proportional to 405,232.40, 608,885.40 and 359,613.20

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Solution

The fourth proportional to 405,232.40, 608,885.40 and 359,613.20 is: 540,339.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,232.40 : 608,885.40 = 359,613.20 : x
  2. Step 2: Convert to fraction form
    405,232.40/608,885.40 = 359,613.20/x
  3. Step 3: Cross multiply
    405,232.40x = 608,885.40 × 359,613.20
  4. Step 4: Simplify right side
    405,232.40x = 218,963,227,127.28
  5. Step 5: Solve for x
    x = 218,963,227,127.28/405,232.40
  6. Step 6: Final answer
    x = 540,339.88

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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.