Home / 311,695,034.04-430,139,650.86-172,471,663.80

Finding the Fourth Proportional to 311,695,034.04, 430,139,650.86 and 172,471,663.80

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Solution

The fourth proportional to 311,695,034.04, 430,139,650.86 and 172,471,663.80 is: 238,011,174.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,695,034.04 : 430,139,650.86 = 172,471,663.80 : x
  2. Step 2: Convert to fraction form
    311,695,034.04/430,139,650.86 = 172,471,663.80/x
  3. Step 3: Cross multiply
    311,695,034.04x = 430,139,650.86 × 172,471,663.80
  4. Step 4: Simplify right side
    311,695,034.04x = 74,186,901,250,175,312
  5. Step 5: Solve for x
    x = 74,186,901,250,175,312/311,695,034.04
  6. Step 6: Final answer
    x = 238,011,174.86

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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.