Home / 328,745,143.80-492,173,997.30-319,307,959.80

Finding the Fourth Proportional to 328,745,143.80, 492,173,997.30 and 319,307,959.80

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Solution

The fourth proportional to 328,745,143.80, 492,173,997.30 and 319,307,959.80 is: 478,045,312.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,745,143.80 : 492,173,997.30 = 319,307,959.80 : x
  2. Step 2: Convert to fraction form
    328,745,143.80/492,173,997.30 = 319,307,959.80/x
  3. Step 3: Cross multiply
    328,745,143.80x = 492,173,997.30 × 319,307,959.80
  4. Step 4: Simplify right side
    328,745,143.80x = 157,155,074,944,473,728
  5. Step 5: Solve for x
    x = 157,155,074,944,473,728/328,745,143.80
  6. Step 6: Final answer
    x = 478,045,312.33

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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.