Home / 492,205,390.20-738,252,098.10-128,736,487.80

Finding the Fourth Proportional to 492,205,390.20, 738,252,098.10 and 128,736,487.80

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Solution

The fourth proportional to 492,205,390.20, 738,252,098.10 and 128,736,487.80 is: 193,090,088.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,205,390.20 : 738,252,098.10 = 128,736,487.80 : x
  2. Step 2: Convert to fraction form
    492,205,390.20/738,252,098.10 = 128,736,487.80/x
  3. Step 3: Cross multiply
    492,205,390.20x = 738,252,098.10 × 128,736,487.80
  4. Step 4: Simplify right side
    492,205,390.20x = 95,039,982,220,375,056
  5. Step 5: Solve for x
    x = 95,039,982,220,375,056/492,205,390.20
  6. Step 6: Final answer
    x = 193,090,088.23

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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.