Home / 378,434.40-522,482.88-235,389.12

Finding the Fourth Proportional to 378,434.40, 522,482.88 and 235,389.12

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Solution

The fourth proportional to 378,434.40, 522,482.88 and 235,389.12 is: 324,988.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,434.40 : 522,482.88 = 235,389.12 : x
  2. Step 2: Convert to fraction form
    378,434.40/522,482.88 = 235,389.12/x
  3. Step 3: Cross multiply
    378,434.40x = 522,482.88 × 235,389.12
  4. Step 4: Simplify right side
    378,434.40x = 122,986,785,338.27
  5. Step 5: Solve for x
    x = 122,986,785,338.27/378,434.40
  6. Step 6: Final answer
    x = 324,988.39

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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.