Home / 257,007,890.16-385,184,310.12-120,392,123.76

Finding the Fourth Proportional to 257,007,890.16, 385,184,310.12 and 120,392,123.76

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Solution

The fourth proportional to 257,007,890.16, 385,184,310.12 and 120,392,123.76 is: 180,434,760.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,007,890.16 : 385,184,310.12 = 120,392,123.76 : x
  2. Step 2: Convert to fraction form
    257,007,890.16/385,184,310.12 = 120,392,123.76/x
  3. Step 3: Cross multiply
    257,007,890.16x = 385,184,310.12 × 120,392,123.76
  4. Step 4: Simplify right side
    257,007,890.16x = 46,373,157,134,377,264
  5. Step 5: Solve for x
    x = 46,373,157,134,377,264/257,007,890.16
  6. Step 6: Final answer
    x = 180,434,760.60

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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.