Home / 261,210,693.98-391,872,728.32-79,453,148.06

Finding the Fourth Proportional to 261,210,693.98, 391,872,728.32 and 79,453,148.06

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Solution

The fourth proportional to 261,210,693.98, 391,872,728.32 and 79,453,148.06 is: 119,196,964.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,210,693.98 : 391,872,728.32 = 79,453,148.06 : x
  2. Step 2: Convert to fraction form
    261,210,693.98/391,872,728.32 = 79,453,148.06/x
  3. Step 3: Cross multiply
    261,210,693.98x = 391,872,728.32 × 79,453,148.06
  4. Step 4: Simplify right side
    261,210,693.98x = 31,135,521,904,666,164
  5. Step 5: Solve for x
    x = 31,135,521,904,666,164/261,210,693.98
  6. Step 6: Final answer
    x = 119,196,964.83

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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.