Home / 328,029,036.70-492,048,803.85-85,691,940.70

Finding the Fourth Proportional to 328,029,036.70, 492,048,803.85 and 85,691,940.70

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Solution

The fourth proportional to 328,029,036.70, 492,048,803.85 and 85,691,940.70 is: 128,539,282.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,029,036.70 : 492,048,803.85 = 85,691,940.70 : x
  2. Step 2: Convert to fraction form
    328,029,036.70/492,048,803.85 = 85,691,940.70/x
  3. Step 3: Cross multiply
    328,029,036.70x = 492,048,803.85 × 85,691,940.70
  4. Step 4: Simplify right side
    328,029,036.70x = 42,164,616,921,020,136
  5. Step 5: Solve for x
    x = 42,164,616,921,020,136/328,029,036.70
  6. Step 6: Final answer
    x = 128,539,282.21

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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.