Home / 421,587.50-581,776.24-240,357.80

Finding the Fourth Proportional to 421,587.50, 581,776.24 and 240,357.80

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Solution

The fourth proportional to 421,587.50, 581,776.24 and 240,357.80 is: 331,685.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,587.50 : 581,776.24 = 240,357.80 : x
  2. Step 2: Convert to fraction form
    421,587.50/581,776.24 = 240,357.80/x
  3. Step 3: Cross multiply
    421,587.50x = 581,776.24 × 240,357.80
  4. Step 4: Simplify right side
    421,587.50x = 139,834,457,138.67
  5. Step 5: Solve for x
    x = 139,834,457,138.67/421,587.50
  6. Step 6: Final answer
    x = 331,685.49

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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.