Home / 385,891,439.04-578,895,945.12-240,207,145.92

Finding the Fourth Proportional to 385,891,439.04, 578,895,945.12 and 240,207,145.92

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Solution

The fourth proportional to 385,891,439.04, 578,895,945.12 and 240,207,145.92 is: 360,347,311.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,891,439.04 : 578,895,945.12 = 240,207,145.92 : x
  2. Step 2: Convert to fraction form
    385,891,439.04/578,895,945.12 = 240,207,145.92/x
  3. Step 3: Cross multiply
    385,891,439.04x = 578,895,945.12 × 240,207,145.92
  4. Step 4: Simplify right side
    385,891,439.04x = 139,054,942,761,936,144
  5. Step 5: Solve for x
    x = 139,054,942,761,936,144/385,891,439.04
  6. Step 6: Final answer
    x = 360,347,311.95

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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.