Home / 403,400.72-556,688.40-222,108.86

Finding the Fourth Proportional to 403,400.72, 556,688.40 and 222,108.86

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Solution

The fourth proportional to 403,400.72, 556,688.40 and 222,108.86 is: 306,507.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,400.72 : 556,688.40 = 222,108.86 : x
  2. Step 2: Convert to fraction form
    403,400.72/556,688.40 = 222,108.86/x
  3. Step 3: Cross multiply
    403,400.72x = 556,688.40 × 222,108.86
  4. Step 4: Simplify right side
    403,400.72x = 123,645,425,899.22
  5. Step 5: Solve for x
    x = 123,645,425,899.22/403,400.72
  6. Step 6: Final answer
    x = 306,507.70

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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.