Home / 420,931.22-631,459.33-154,670.96

Finding the Fourth Proportional to 420,931.22, 631,459.33 and 154,670.96

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Solution

The fourth proportional to 420,931.22, 631,459.33 and 154,670.96 is: 232,029.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,931.22 : 631,459.33 = 154,670.96 : x
  2. Step 2: Convert to fraction form
    420,931.22/631,459.33 = 154,670.96/x
  3. Step 3: Cross multiply
    420,931.22x = 631,459.33 × 154,670.96
  4. Step 4: Simplify right side
    420,931.22x = 97,668,420,772.06
  5. Step 5: Solve for x
    x = 97,668,420,772.06/420,931.22
  6. Step 6: Final answer
    x = 232,029.41

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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.