Home / 213,716,728.80-320,575,093.20-145,692,280.80

Finding the Fourth Proportional to 213,716,728.80, 320,575,093.20 and 145,692,280.80

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Solution

The fourth proportional to 213,716,728.80, 320,575,093.20 and 145,692,280.80 is: 218,538,421.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,716,728.80 : 320,575,093.20 = 145,692,280.80 : x
  2. Step 2: Convert to fraction form
    213,716,728.80/320,575,093.20 = 145,692,280.80/x
  3. Step 3: Cross multiply
    213,716,728.80x = 320,575,093.20 × 145,692,280.80
  4. Step 4: Simplify right side
    213,716,728.80x = 46,705,316,495,980,576
  5. Step 5: Solve for x
    x = 46,705,316,495,980,576/213,716,728.80
  6. Step 6: Final answer
    x = 218,538,421.20

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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.