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Finding the Fourth Proportional to 354,912.40, 532,368.60 and 291,926.80

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Solution

The fourth proportional to 354,912.40, 532,368.60 and 291,926.80 is: 437,890.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,912.40 : 532,368.60 = 291,926.80 : x
  2. Step 2: Convert to fraction form
    354,912.40/532,368.60 = 291,926.80/x
  3. Step 3: Cross multiply
    354,912.40x = 532,368.60 × 291,926.80
  4. Step 4: Simplify right side
    354,912.40x = 155,412,661,818.48
  5. Step 5: Solve for x
    x = 155,412,661,818.48/354,912.40
  6. Step 6: Final answer
    x = 437,890.20

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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.