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Finding the Fourth Proportional to 341,628.40, 512,442.60 and 145,020.40

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Solution

The fourth proportional to 341,628.40, 512,442.60 and 145,020.40 is: 217,530.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,628.40 : 512,442.60 = 145,020.40 : x
  2. Step 2: Convert to fraction form
    341,628.40/512,442.60 = 145,020.40/x
  3. Step 3: Cross multiply
    341,628.40x = 512,442.60 × 145,020.40
  4. Step 4: Simplify right side
    341,628.40x = 74,314,630,829.04
  5. Step 5: Solve for x
    x = 74,314,630,829.04/341,628.40
  6. Step 6: Final answer
    x = 217,530.60

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1.5x scale

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.