Home / 356,537,089.64-491,903,571.12-215,355,557.36

Finding the Fourth Proportional to 356,537,089.64, 491,903,571.12 and 215,355,557.36

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Solution

The fourth proportional to 356,537,089.64, 491,903,571.12 and 215,355,557.36 is: 297,119,628.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,537,089.64 : 491,903,571.12 = 215,355,557.36 : x
  2. Step 2: Convert to fraction form
    356,537,089.64/491,903,571.12 = 215,355,557.36/x
  3. Step 3: Cross multiply
    356,537,089.64x = 491,903,571.12 × 215,355,557.36
  4. Step 4: Simplify right side
    356,537,089.64x = 105,934,167,725,922,000
  5. Step 5: Solve for x
    x = 105,934,167,725,922,000/356,537,089.64
  6. Step 6: Final answer
    x = 297,119,628.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.