Home / 421,315.10-581,421.76-251,564.06

Finding the Fourth Proportional to 421,315.10, 581,421.76 and 251,564.06

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Solution

The fourth proportional to 421,315.10, 581,421.76 and 251,564.06 is: 347,162.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,315.10 : 581,421.76 = 251,564.06 : x
  2. Step 2: Convert to fraction form
    421,315.10/581,421.76 = 251,564.06/x
  3. Step 3: Cross multiply
    421,315.10x = 581,421.76 × 251,564.06
  4. Step 4: Simplify right side
    421,315.10x = 146,264,818,517.95
  5. Step 5: Solve for x
    x = 146,264,818,517.95/421,315.10
  6. Step 6: Final answer
    x = 347,162.54

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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.