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Finding the Fourth Proportional to 369,989,813.84, 555,018,835.90 and 120,996,362.76

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Solution

The fourth proportional to 369,989,813.84, 555,018,835.90 and 120,996,362.76 is: 181,505,700.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,989,813.84 : 555,018,835.90 = 120,996,362.76 : x
  2. Step 2: Convert to fraction form
    369,989,813.84/555,018,835.90 = 120,996,362.76/x
  3. Step 3: Cross multiply
    369,989,813.84x = 555,018,835.90 × 120,996,362.76
  4. Step 4: Simplify right side
    369,989,813.84x = 67,155,260,405,495,176
  5. Step 5: Solve for x
    x = 67,155,260,405,495,176/369,989,813.84
  6. Step 6: Final answer
    x = 181,505,700.68

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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.