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Finding the Fourth Proportional to 369,989,814.84, 555,018,837.40 and 120,996,363.76

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Solution

The fourth proportional to 369,989,814.84, 555,018,837.40 and 120,996,363.76 is: 181,505,702.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,989,814.84 : 555,018,837.40 = 120,996,363.76 : x
  2. Step 2: Convert to fraction form
    369,989,814.84/555,018,837.40 = 120,996,363.76/x
  3. Step 3: Cross multiply
    369,989,814.84x = 555,018,837.40 × 120,996,363.76
  4. Step 4: Simplify right side
    369,989,814.84x = 67,155,261,143,702,696
  5. Step 5: Solve for x
    x = 67,155,261,143,702,696/369,989,814.84
  6. Step 6: Final answer
    x = 181,505,702.18

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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.