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Finding the Fourth Proportional to 303,960,578.58, 455,977,763.50 and 85,610,920.94

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Solution

The fourth proportional to 303,960,578.58, 455,977,763.50 and 85,610,920.94 is: 128,426,773.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,960,578.58 : 455,977,763.50 = 85,610,920.94 : x
  2. Step 2: Convert to fraction form
    303,960,578.58/455,977,763.50 = 85,610,920.94/x
  3. Step 3: Cross multiply
    303,960,578.58x = 455,977,763.50 × 85,610,920.94
  4. Step 4: Simplify right side
    303,960,578.58x = 39,036,676,262,953,528
  5. Step 5: Solve for x
    x = 39,036,676,262,953,528/303,960,578.58
  6. Step 6: Final answer
    x = 128,426,773.12

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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.