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Finding the Fourth Proportional to 415,883,145.03, 623,920,389.23 and 139,571,025.90

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Solution

The fourth proportional to 415,883,145.03, 623,920,389.23 and 139,571,025.90 is: 209,388,646.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,883,145.03 : 623,920,389.23 = 139,571,025.90 : x
  2. Step 2: Convert to fraction form
    415,883,145.03/623,920,389.23 = 139,571,025.90/x
  3. Step 3: Cross multiply
    415,883,145.03x = 623,920,389.23 × 139,571,025.90
  4. Step 4: Simplify right side
    415,883,145.03x = 87,081,208,804,060,560
  5. Step 5: Solve for x
    x = 87,081,208,804,060,560/415,883,145.03
  6. Step 6: Final answer
    x = 209,388,646.41

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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.