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Finding the Fourth Proportional to 418,416.32, 627,624.80 and 118,858.24

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Solution

The fourth proportional to 418,416.32, 627,624.80 and 118,858.24 is: 178,287.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,416.32 : 627,624.80 = 118,858.24 : x
  2. Step 2: Convert to fraction form
    418,416.32/627,624.80 = 118,858.24/x
  3. Step 3: Cross multiply
    418,416.32x = 627,624.80 × 118,858.24
  4. Step 4: Simplify right side
    418,416.32x = 74,598,379,108.35
  5. Step 5: Solve for x
    x = 74,598,379,108.35/418,416.32
  6. Step 6: Final answer
    x = 178,287.45

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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.