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Finding the Fourth Proportional to 398,108.80, 596,774.40 and 356,118.40

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Solution

The fourth proportional to 398,108.80, 596,774.40 and 356,118.40 is: 533,829.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,108.80 : 596,774.40 = 356,118.40 : x
  2. Step 2: Convert to fraction form
    398,108.80/596,774.40 = 356,118.40/x
  3. Step 3: Cross multiply
    398,108.80x = 596,774.40 × 356,118.40
  4. Step 4: Simplify right side
    398,108.80x = 212,522,344,488.96
  5. Step 5: Solve for x
    x = 212,522,344,488.96/398,108.80
  6. Step 6: Final answer
    x = 533,829.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.