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Finding the Fourth Proportional to 243,143.20, 364,455.60 and 93,325.60

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Solution

The fourth proportional to 243,143.20, 364,455.60 and 93,325.60 is: 139,888.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,143.20 : 364,455.60 = 93,325.60 : x
  2. Step 2: Convert to fraction form
    243,143.20/364,455.60 = 93,325.60/x
  3. Step 3: Cross multiply
    243,143.20x = 364,455.60 × 93,325.60
  4. Step 4: Simplify right side
    243,143.20x = 34,013,037,543.36
  5. Step 5: Solve for x
    x = 34,013,037,543.36/243,143.20
  6. Step 6: Final answer
    x = 139,888.91

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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.