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Finding the Fourth Proportional to 478,249.42, 659,962.92 and 274,154.02

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Solution

The fourth proportional to 478,249.42, 659,962.92 and 274,154.02 is: 378,320.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,249.42 : 659,962.92 = 274,154.02 : x
  2. Step 2: Convert to fraction form
    478,249.42/659,962.92 = 274,154.02/x
  3. Step 3: Cross multiply
    478,249.42x = 659,962.92 × 274,154.02
  4. Step 4: Simplify right side
    478,249.42x = 180,931,487,568.94
  5. Step 5: Solve for x
    x = 180,931,487,568.94/478,249.42
  6. Step 6: Final answer
    x = 378,320.35

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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.