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Finding the Fourth Proportional to 368,868.40, 553,302.60 and 331,543.60

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Solution

The fourth proportional to 368,868.40, 553,302.60 and 331,543.60 is: 497,315.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,868.40 : 553,302.60 = 331,543.60 : x
  2. Step 2: Convert to fraction form
    368,868.40/553,302.60 = 331,543.60/x
  3. Step 3: Cross multiply
    368,868.40x = 553,302.60 × 331,543.60
  4. Step 4: Simplify right side
    368,868.40x = 183,443,935,893.36
  5. Step 5: Solve for x
    x = 183,443,935,893.36/368,868.40
  6. Step 6: Final answer
    x = 497,315.40

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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.