Home / 398,530.12-549,944.08-224,126.40

Finding the Fourth Proportional to 398,530.12, 549,944.08 and 224,126.40

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Solution

The fourth proportional to 398,530.12, 549,944.08 and 224,126.40 is: 309,278.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,530.12 : 549,944.08 = 224,126.40 : x
  2. Step 2: Convert to fraction form
    398,530.12/549,944.08 = 224,126.40/x
  3. Step 3: Cross multiply
    398,530.12x = 549,944.08 × 224,126.40
  4. Step 4: Simplify right side
    398,530.12x = 123,256,986,851.71
  5. Step 5: Solve for x
    x = 123,256,986,851.71/398,530.12
  6. Step 6: Final answer
    x = 309,278.97

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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.