Home / 421,719.04-581,914.80-251,917.12

Finding the Fourth Proportional to 421,719.04, 581,914.80 and 251,917.12

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Solution

The fourth proportional to 421,719.04, 581,914.80 and 251,917.12 is: 347,611.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,719.04 : 581,914.80 = 251,917.12 : x
  2. Step 2: Convert to fraction form
    421,719.04/581,914.80 = 251,917.12/x
  3. Step 3: Cross multiply
    421,719.04x = 581,914.80 × 251,917.12
  4. Step 4: Simplify right side
    421,719.04x = 146,594,300,501.38
  5. Step 5: Solve for x
    x = 146,594,300,501.38/421,719.04
  6. Step 6: Final answer
    x = 347,611.29

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1.5x scale

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.