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Finding the Fourth Proportional to 398,448.60, 549,878.54 and 224,073.69

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Solution

The fourth proportional to 398,448.60, 549,878.54 and 224,073.69 is: 309,232.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,448.60 : 549,878.54 = 224,073.69 : x
  2. Step 2: Convert to fraction form
    398,448.60/549,878.54 = 224,073.69/x
  3. Step 3: Cross multiply
    398,448.60x = 549,878.54 × 224,073.69
  4. Step 4: Simplify right side
    398,448.60x = 123,213,312,389.24
  5. Step 5: Solve for x
    x = 123,213,312,389.24/398,448.60
  6. Step 6: Final answer
    x = 309,232.64

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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.