Home / 390,865,932.10-585,925,650.15-145,156,773.70

Finding the Fourth Proportional to 390,865,932.10, 585,925,650.15 and 145,156,773.70

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Solution

The fourth proportional to 390,865,932.10, 585,925,650.15 and 145,156,773.70 is: 217,596,546.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,865,932.10 : 585,925,650.15 = 145,156,773.70 : x
  2. Step 2: Convert to fraction form
    390,865,932.10/585,925,650.15 = 145,156,773.70/x
  3. Step 3: Cross multiply
    390,865,932.10x = 585,925,650.15 × 145,156,773.70
  4. Step 4: Simplify right side
    390,865,932.10x = 85,051,077,003,848,912
  5. Step 5: Solve for x
    x = 85,051,077,003,848,912/390,865,932.10
  6. Step 6: Final answer
    x = 217,596,546.59

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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.