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Finding the Fourth Proportional to 307,929.60, 424,569.60 and 236,390.40

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Solution

The fourth proportional to 307,929.60, 424,569.60 and 236,390.40 is: 325,932.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,929.60 : 424,569.60 = 236,390.40 : x
  2. Step 2: Convert to fraction form
    307,929.60/424,569.60 = 236,390.40/x
  3. Step 3: Cross multiply
    307,929.60x = 424,569.60 × 236,390.40
  4. Step 4: Simplify right side
    307,929.60x = 100,364,177,571.84
  5. Step 5: Solve for x
    x = 100,364,177,571.84/307,929.60
  6. Step 6: Final answer
    x = 325,932.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.