Home / 421,210.24-631,426.56-210,664.96

Finding the Fourth Proportional to 421,210.24, 631,426.56 and 210,664.96

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Solution

The fourth proportional to 421,210.24, 631,426.56 and 210,664.96 is: 315,802.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,210.24 : 631,426.56 = 210,664.96 : x
  2. Step 2: Convert to fraction form
    421,210.24/631,426.56 = 210,664.96/x
  3. Step 3: Cross multiply
    421,210.24x = 631,426.56 × 210,664.96
  4. Step 4: Simplify right side
    421,210.24x = 133,019,451,005.34
  5. Step 5: Solve for x
    x = 133,019,451,005.34/421,210.24
  6. Step 6: Final answer
    x = 315,802.98

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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.