Home / 420,365.02-580,117.73-229,388.89

Finding the Fourth Proportional to 420,365.02, 580,117.73 and 229,388.89

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Solution

The fourth proportional to 420,365.02, 580,117.73 and 229,388.89 is: 316,564.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,365.02 : 580,117.73 = 229,388.89 : x
  2. Step 2: Convert to fraction form
    420,365.02/580,117.73 = 229,388.89/x
  3. Step 3: Cross multiply
    420,365.02x = 580,117.73 × 229,388.89
  4. Step 4: Simplify right side
    420,365.02x = 133,072,562,154.02
  5. Step 5: Solve for x
    x = 133,072,562,154.02/420,365.02
  6. Step 6: Final answer
    x = 316,564.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.