Home / 420,432.80-630,274.11-154,131.10

Finding the Fourth Proportional to 420,432.80, 630,274.11 and 154,131.10

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Solution

The fourth proportional to 420,432.80, 630,274.11 and 154,131.10 is: 231,059.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,432.80 : 630,274.11 = 154,131.10 : x
  2. Step 2: Convert to fraction form
    420,432.80/630,274.11 = 154,131.10/x
  3. Step 3: Cross multiply
    420,432.80x = 630,274.11 × 154,131.10
  4. Step 4: Simplify right side
    420,432.80x = 97,144,841,875.82
  5. Step 5: Solve for x
    x = 97,144,841,875.82/420,432.80
  6. Step 6: Final answer
    x = 231,059.14

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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.