Home / 398,528.12-549,941.32-224,124.40

Finding the Fourth Proportional to 398,528.12, 549,941.32 and 224,124.40

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Solution

The fourth proportional to 398,528.12, 549,941.32 and 224,124.40 is: 309,276.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,528.12 : 549,941.32 = 224,124.40 : x
  2. Step 2: Convert to fraction form
    398,528.12/549,941.32 = 224,124.40/x
  3. Step 3: Cross multiply
    398,528.12x = 549,941.32 × 224,124.40
  4. Step 4: Simplify right side
    398,528.12x = 123,255,268,380.21
  5. Step 5: Solve for x
    x = 123,255,268,380.21/398,528.12
  6. Step 6: Final answer
    x = 309,276.21

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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.