Home / 420,001.40-629,929.20-153,624.80

Finding the Fourth Proportional to 420,001.40, 629,929.20 and 153,624.80

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Solution

The fourth proportional to 420,001.40, 629,929.20 and 153,624.80 is: 230,410.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,001.40 : 629,929.20 = 153,624.80 : x
  2. Step 2: Convert to fraction form
    420,001.40/629,929.20 = 153,624.80/x
  3. Step 3: Cross multiply
    420,001.40x = 629,929.20 × 153,624.80
  4. Step 4: Simplify right side
    420,001.40x = 96,772,747,364.16
  5. Step 5: Solve for x
    x = 96,772,747,364.16/420,001.40
  6. Step 6: Final answer
    x = 230,410.54

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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.