Home / 353,522.12-529,968.76-128,840.36

Finding the Fourth Proportional to 353,522.12, 529,968.76 and 128,840.36

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Solution

The fourth proportional to 353,522.12, 529,968.76 and 128,840.36 is: 193,145.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,522.12 : 529,968.76 = 128,840.36 : x
  2. Step 2: Convert to fraction form
    353,522.12/529,968.76 = 128,840.36/x
  3. Step 3: Cross multiply
    353,522.12x = 529,968.76 × 128,840.36
  4. Step 4: Simplify right side
    353,522.12x = 68,281,365,827.15
  5. Step 5: Solve for x
    x = 68,281,365,827.15/353,522.12
  6. Step 6: Final answer
    x = 193,145.95

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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.