Home / 320,828,391.32-480,413,778-221,424,762.07

Finding the Fourth Proportional to 320,828,391.32, 480,413,778 and 221,424,762.07

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Solution

The fourth proportional to 320,828,391.32, 480,413,778 and 221,424,762.07 is: 331,565,127.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,828,391.32 : 480,413,778 = 221,424,762.07 : x
  2. Step 2: Convert to fraction form
    320,828,391.32/480,413,778 = 221,424,762.07/x
  3. Step 3: Cross multiply
    320,828,391.32x = 480,413,778 × 221,424,762.07
  4. Step 4: Simplify right side
    320,828,391.32x = 106,375,506,490,000,832
  5. Step 5: Solve for x
    x = 106,375,506,490,000,832/320,828,391.32
  6. Step 6: Final answer
    x = 331,565,127.55

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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.