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Finding the Fourth Proportional to 361,605.45, 542,282.37 and 148,312.80

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Solution

The fourth proportional to 361,605.45, 542,282.37 and 148,312.80 is: 222,417.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,605.45 : 542,282.37 = 148,312.80 : x
  2. Step 2: Convert to fraction form
    361,605.45/542,282.37 = 148,312.80/x
  3. Step 3: Cross multiply
    361,605.45x = 542,282.37 × 148,312.80
  4. Step 4: Simplify right side
    361,605.45x = 80,427,416,685.34
  5. Step 5: Solve for x
    x = 80,427,416,685.34/361,605.45
  6. Step 6: Final answer
    x = 222,417.60

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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.