Home / 311,393,688.53-429,715,725.41-172,160,870.45

Finding the Fourth Proportional to 311,393,688.53, 429,715,725.41 and 172,160,870.45

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Solution

The fourth proportional to 311,393,688.53, 429,715,725.41 and 172,160,870.45 is: 237,577,818.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,393,688.53 : 429,715,725.41 = 172,160,870.45 : x
  2. Step 2: Convert to fraction form
    311,393,688.53/429,715,725.41 = 172,160,870.45/x
  3. Step 3: Cross multiply
    311,393,688.53x = 429,715,725.41 × 172,160,870.45
  4. Step 4: Simplify right side
    311,393,688.53x = 73,980,233,330,920,608
  5. Step 5: Solve for x
    x = 73,980,233,330,920,608/311,393,688.53
  6. Step 6: Final answer
    x = 237,577,818.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.