Home / 420,914.72-631,527.60-154,849.16

Finding the Fourth Proportional to 420,914.72, 631,527.60 and 154,849.16

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Solution

The fourth proportional to 420,914.72, 631,527.60 and 154,849.16 is: 232,330.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,914.72 : 631,527.60 = 154,849.16 : x
  2. Step 2: Convert to fraction form
    420,914.72/631,527.60 = 154,849.16/x
  3. Step 3: Cross multiply
    420,914.72x = 631,527.60 × 154,849.16
  4. Step 4: Simplify right side
    420,914.72x = 97,791,518,376.82
  5. Step 5: Solve for x
    x = 97,791,518,376.82/420,914.72
  6. Step 6: Final answer
    x = 232,330.95

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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.