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Finding the Fourth Proportional to 398,716.21, 597,397.29 and 240,612.45

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Solution

The fourth proportional to 398,716.21, 597,397.29 and 240,612.45 is: 360,510.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,716.21 : 597,397.29 = 240,612.45 : x
  2. Step 2: Convert to fraction form
    398,716.21/597,397.29 = 240,612.45/x
  3. Step 3: Cross multiply
    398,716.21x = 597,397.29 × 240,612.45
  4. Step 4: Simplify right side
    398,716.21x = 143,741,225,570.26
  5. Step 5: Solve for x
    x = 143,741,225,570.26/398,716.21
  6. Step 6: Final answer
    x = 360,510.11

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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.