Home / 307,961.64-425,280.58-291,189.16

Finding the Fourth Proportional to 307,961.64, 425,280.58 and 291,189.16

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Solution

The fourth proportional to 307,961.64, 425,280.58 and 291,189.16 is: 402,118.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,961.64 : 425,280.58 = 291,189.16 : x
  2. Step 2: Convert to fraction form
    307,961.64/425,280.58 = 291,189.16/x
  3. Step 3: Cross multiply
    307,961.64x = 425,280.58 × 291,189.16
  4. Step 4: Simplify right side
    307,961.64x = 123,837,094,854.51
  5. Step 5: Solve for x
    x = 123,837,094,854.51/307,961.64
  6. Step 6: Final answer
    x = 402,118.57

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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.