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Finding the Fourth Proportional to 239,364.60, 359,046.90 and 139,637.40

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Solution

The fourth proportional to 239,364.60, 359,046.90 and 139,637.40 is: 209,456.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,364.60 : 359,046.90 = 139,637.40 : x
  2. Step 2: Convert to fraction form
    239,364.60/359,046.90 = 139,637.40/x
  3. Step 3: Cross multiply
    239,364.60x = 359,046.90 × 139,637.40
  4. Step 4: Simplify right side
    239,364.60x = 50,136,375,594.06
  5. Step 5: Solve for x
    x = 50,136,375,594.06/239,364.60
  6. Step 6: Final answer
    x = 209,456.10

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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.