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Finding the Fourth Proportional to 398,627.20, 597,643.20 and 240,822.40

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Solution

The fourth proportional to 398,627.20, 597,643.20 and 240,822.40 is: 361,053.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,627.20 : 597,643.20 = 240,822.40 : x
  2. Step 2: Convert to fraction form
    398,627.20/597,643.20 = 240,822.40/x
  3. Step 3: Cross multiply
    398,627.20x = 597,643.20 × 240,822.40
  4. Step 4: Simplify right side
    398,627.20x = 143,925,869,767.68
  5. Step 5: Solve for x
    x = 143,925,869,767.68/398,627.20
  6. Step 6: Final answer
    x = 361,053.81

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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.