Home / 215,607,643.20-323,411,464.80-79,264,814.40

Finding the Fourth Proportional to 215,607,643.20, 323,411,464.80 and 79,264,814.40

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Solution

The fourth proportional to 215,607,643.20, 323,411,464.80 and 79,264,814.40 is: 118,897,221.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,607,643.20 : 323,411,464.80 = 79,264,814.40 : x
  2. Step 2: Convert to fraction form
    215,607,643.20/323,411,464.80 = 79,264,814.40/x
  3. Step 3: Cross multiply
    215,607,643.20x = 323,411,464.80 × 79,264,814.40
  4. Step 4: Simplify right side
    215,607,643.20x = 25,635,149,732,204,136
  5. Step 5: Solve for x
    x = 25,635,149,732,204,136/215,607,643.20
  6. Step 6: Final answer
    x = 118,897,221.60

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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.