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Finding the Fourth Proportional to 354,860.40, 532,290.60 and 291,874.80

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Solution

The fourth proportional to 354,860.40, 532,290.60 and 291,874.80 is: 437,812.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,860.40 : 532,290.60 = 291,874.80 : x
  2. Step 2: Convert to fraction form
    354,860.40/532,290.60 = 291,874.80/x
  3. Step 3: Cross multiply
    354,860.40x = 532,290.60 × 291,874.80
  4. Step 4: Simplify right side
    354,860.40x = 155,362,212,416.88
  5. Step 5: Solve for x
    x = 155,362,212,416.88/354,860.40
  6. Step 6: Final answer
    x = 437,812.20

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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.