Home / 385,477,441.20-578,216,145.60-112,848,207.12

Finding the Fourth Proportional to 385,477,441.20, 578,216,145.60 and 112,848,207.12

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Solution

The fourth proportional to 385,477,441.20, 578,216,145.60 and 112,848,207.12 is: 169,272,305.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,477,441.20 : 578,216,145.60 = 112,848,207.12 : x
  2. Step 2: Convert to fraction form
    385,477,441.20/578,216,145.60 = 112,848,207.12/x
  3. Step 3: Cross multiply
    385,477,441.20x = 578,216,145.60 × 112,848,207.12
  4. Step 4: Simplify right side
    385,477,441.20x = 65,250,655,358,796,880
  5. Step 5: Solve for x
    x = 65,250,655,358,796,880/385,477,441.20
  6. Step 6: Final answer
    x = 169,272,305.94

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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.