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Finding the Fourth Proportional to 415,459.80, 623,189.70 and 149,261.40

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Solution

The fourth proportional to 415,459.80, 623,189.70 and 149,261.40 is: 223,892.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,459.80 : 623,189.70 = 149,261.40 : x
  2. Step 2: Convert to fraction form
    415,459.80/623,189.70 = 149,261.40/x
  3. Step 3: Cross multiply
    415,459.80x = 623,189.70 × 149,261.40
  4. Step 4: Simplify right side
    415,459.80x = 93,018,167,087.58
  5. Step 5: Solve for x
    x = 93,018,167,087.58/415,459.80
  6. Step 6: Final answer
    x = 223,892.10

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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.