Home / 419,913.81-579,492.09-258,875.28

Finding the Fourth Proportional to 419,913.81, 579,492.09 and 258,875.28

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Solution

The fourth proportional to 419,913.81, 579,492.09 and 258,875.28 is: 357,254.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,913.81 : 579,492.09 = 258,875.28 : x
  2. Step 2: Convert to fraction form
    419,913.81/579,492.09 = 258,875.28/x
  3. Step 3: Cross multiply
    419,913.81x = 579,492.09 × 258,875.28
  4. Step 4: Simplify right side
    419,913.81x = 150,016,177,056.54
  5. Step 5: Solve for x
    x = 150,016,177,056.54/419,913.81
  6. Step 6: Final answer
    x = 357,254.69

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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.