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Finding the Fourth Proportional to 144,890.40, 217,335.60 and 39,709.20

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Solution

The fourth proportional to 144,890.40, 217,335.60 and 39,709.20 is: 59,563.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,890.40 : 217,335.60 = 39,709.20 : x
  2. Step 2: Convert to fraction form
    144,890.40/217,335.60 = 39,709.20/x
  3. Step 3: Cross multiply
    144,890.40x = 217,335.60 × 39,709.20
  4. Step 4: Simplify right side
    144,890.40x = 8,630,222,807.52
  5. Step 5: Solve for x
    x = 8,630,222,807.52/144,890.40
  6. Step 6: Final answer
    x = 59,563.80

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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.