Home / 543,215,234.18-749,655,110.36-305,102,315.45

Finding the Fourth Proportional to 543,215,234.18, 749,655,110.36 and 305,102,315.45

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Solution

The fourth proportional to 543,215,234.18, 749,655,110.36 and 305,102,315.45 is: 421,051,354.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,215,234.18 : 749,655,110.36 = 305,102,315.45 : x
  2. Step 2: Convert to fraction form
    543,215,234.18/749,655,110.36 = 305,102,315.45/x
  3. Step 3: Cross multiply
    543,215,234.18x = 749,655,110.36 × 305,102,315.45
  4. Step 4: Simplify right side
    543,215,234.18x = 228,721,509,962,398,144
  5. Step 5: Solve for x
    x = 228,721,509,962,398,144/543,215,234.18
  6. Step 6: Final answer
    x = 421,051,354.18

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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.