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Finding the Fourth Proportional to 539,136,410.40, 808,704,615.60 and 216,252,007.20

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Solution

The fourth proportional to 539,136,410.40, 808,704,615.60 and 216,252,007.20 is: 324,378,010.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,136,410.40 : 808,704,615.60 = 216,252,007.20 : x
  2. Step 2: Convert to fraction form
    539,136,410.40/808,704,615.60 = 216,252,007.20/x
  3. Step 3: Cross multiply
    539,136,410.40x = 808,704,615.60 × 216,252,007.20
  4. Step 4: Simplify right side
    539,136,410.40x = 174,883,996,355,404,416
  5. Step 5: Solve for x
    x = 174,883,996,355,404,416/539,136,410.40
  6. Step 6: Final answer
    x = 324,378,010.80

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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.