Home / 420,426.89-630,265.33-154,125.23

Finding the Fourth Proportional to 420,426.89, 630,265.33 and 154,125.23

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Solution

The fourth proportional to 420,426.89, 630,265.33 and 154,125.23 is: 231,050.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,426.89 : 630,265.33 = 154,125.23 : x
  2. Step 2: Convert to fraction form
    420,426.89/630,265.33 = 154,125.23/x
  3. Step 3: Cross multiply
    420,426.89x = 630,265.33 × 154,125.23
  4. Step 4: Simplify right side
    420,426.89x = 97,139,785,410.64
  5. Step 5: Solve for x
    x = 97,139,785,410.64/420,426.89
  6. Step 6: Final answer
    x = 231,050.37

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1.5x scale

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.