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Finding the Fourth Proportional to 303,958,663.67, 455,945,460.00 and 85,607,528.45

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Solution

The fourth proportional to 303,958,663.67, 455,945,460.00 and 85,607,528.45 is: 128,413,394.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,958,663.67 : 455,945,460.00 = 85,607,528.45 : x
  2. Step 2: Convert to fraction form
    303,958,663.67/455,945,460.00 = 85,607,528.45/x
  3. Step 3: Cross multiply
    303,958,663.67x = 455,945,460.00 × 85,607,528.45
  4. Step 4: Simplify right side
    303,958,663.67x = 39,032,363,935,997,576
  5. Step 5: Solve for x
    x = 39,032,363,935,997,576/303,958,663.67
  6. Step 6: Final answer
    x = 128,413,394.98

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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.