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Finding the Fourth Proportional to 355,716.48, 533,440.80 and 145,241.76

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Solution

The fourth proportional to 355,716.48, 533,440.80 and 145,241.76 is: 217,807.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,716.48 : 533,440.80 = 145,241.76 : x
  2. Step 2: Convert to fraction form
    355,716.48/533,440.80 = 145,241.76/x
  3. Step 3: Cross multiply
    355,716.48x = 533,440.80 × 145,241.76
  4. Step 4: Simplify right side
    355,716.48x = 77,477,880,647.81
  5. Step 5: Solve for x
    x = 77,477,880,647.81/355,716.48
  6. Step 6: Final answer
    x = 217,807.96

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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.