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Finding the Fourth Proportional to 461,173.55, 636,420.36 and 257,237.67

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Solution

The fourth proportional to 461,173.55, 636,420.36 and 257,237.67 is: 354,988.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,173.55 : 636,420.36 = 257,237.67 : x
  2. Step 2: Convert to fraction form
    461,173.55/636,420.36 = 257,237.67/x
  3. Step 3: Cross multiply
    461,173.55x = 636,420.36 × 257,237.67
  4. Step 4: Simplify right side
    461,173.55x = 163,711,290,546.96
  5. Step 5: Solve for x
    x = 163,711,290,546.96/461,173.55
  6. Step 6: Final answer
    x = 354,988.47

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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.