Home / 217,620,356.40-326,430,534.60-72,076,381.20

Finding the Fourth Proportional to 217,620,356.40, 326,430,534.60 and 72,076,381.20

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Solution

The fourth proportional to 217,620,356.40, 326,430,534.60 and 72,076,381.20 is: 108,114,571.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,620,356.40 : 326,430,534.60 = 72,076,381.20 : x
  2. Step 2: Convert to fraction form
    217,620,356.40/326,430,534.60 = 72,076,381.20/x
  3. Step 3: Cross multiply
    217,620,356.40x = 326,430,534.60 × 72,076,381.20
  4. Step 4: Simplify right side
    217,620,356.40x = 23,527,931,647,149,392
  5. Step 5: Solve for x
    x = 23,527,931,647,149,392/217,620,356.40
  6. Step 6: Final answer
    x = 108,114,571.80

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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.