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Finding the Fourth Proportional to 255,648,664.80, 383,472,997.20 and 213,133,384.80

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Solution

The fourth proportional to 255,648,664.80, 383,472,997.20 and 213,133,384.80 is: 319,700,077.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,648,664.80 : 383,472,997.20 = 213,133,384.80 : x
  2. Step 2: Convert to fraction form
    255,648,664.80/383,472,997.20 = 213,133,384.80/x
  3. Step 3: Cross multiply
    255,648,664.80x = 383,472,997.20 × 213,133,384.80
  4. Step 4: Simplify right side
    255,648,664.80x = 81,730,897,872,636,928
  5. Step 5: Solve for x
    x = 81,730,897,872,636,928/255,648,664.80
  6. Step 6: Final answer
    x = 319,700,077.20

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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.