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Finding the Fourth Proportional to 398,153.91, 549,572.44 and 270,903.32

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Solution

The fourth proportional to 398,153.91, 549,572.44 and 270,903.32 is: 373,928.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,153.91 : 549,572.44 = 270,903.32 : x
  2. Step 2: Convert to fraction form
    398,153.91/549,572.44 = 270,903.32/x
  3. Step 3: Cross multiply
    398,153.91x = 549,572.44 × 270,903.32
  4. Step 4: Simplify right side
    398,153.91x = 148,880,995,828.64
  5. Step 5: Solve for x
    x = 148,880,995,828.64/398,153.91
  6. Step 6: Final answer
    x = 373,928.25

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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.