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Finding the Fourth Proportional to 380,582.40, 524,138.40 and 372,317.16

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Solution

The fourth proportional to 380,582.40, 524,138.40 and 372,317.16 is: 512,755.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,582.40 : 524,138.40 = 372,317.16 : x
  2. Step 2: Convert to fraction form
    380,582.40/524,138.40 = 372,317.16/x
  3. Step 3: Cross multiply
    380,582.40x = 524,138.40 × 372,317.16
  4. Step 4: Simplify right side
    380,582.40x = 195,145,720,534.94
  5. Step 5: Solve for x
    x = 195,145,720,534.94/380,582.40
  6. Step 6: Final answer
    x = 512,755.50

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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.