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Finding the Fourth Proportional to 398,748.96, 549,962.54 and 255,522.32

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Solution

The fourth proportional to 398,748.96, 549,962.54 and 255,522.32 is: 352,421.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,748.96 : 549,962.54 = 255,522.32 : x
  2. Step 2: Convert to fraction form
    398,748.96/549,962.54 = 255,522.32/x
  3. Step 3: Cross multiply
    398,748.96x = 549,962.54 × 255,522.32
  4. Step 4: Simplify right side
    398,748.96x = 140,527,704,133.89
  5. Step 5: Solve for x
    x = 140,527,704,133.89/398,748.96
  6. Step 6: Final answer
    x = 352,421.49

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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.