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Finding the Fourth Proportional to 394,911.20, 592,804.20 and 245,320.40

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Solution

The fourth proportional to 394,911.20, 592,804.20 and 245,320.40 is: 368,252.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,911.20 : 592,804.20 = 245,320.40 : x
  2. Step 2: Convert to fraction form
    394,911.20/592,804.20 = 245,320.40/x
  3. Step 3: Cross multiply
    394,911.20x = 592,804.20 × 245,320.40
  4. Step 4: Simplify right side
    394,911.20x = 145,426,963,465.68
  5. Step 5: Solve for x
    x = 145,426,963,465.68/394,911.20
  6. Step 6: Final answer
    x = 368,252.31

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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.