Home / 289,243.09-434,030.77-225,885.36

Finding the Fourth Proportional to 289,243.09, 434,030.77 and 225,885.36

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Solution

The fourth proportional to 289,243.09, 434,030.77 and 225,885.36 is: 338,957.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,243.09 : 434,030.77 = 225,885.36 : x
  2. Step 2: Convert to fraction form
    289,243.09/434,030.77 = 225,885.36/x
  3. Step 3: Cross multiply
    289,243.09x = 434,030.77 × 225,885.36
  4. Step 4: Simplify right side
    289,243.09x = 98,041,195,248.12
  5. Step 5: Solve for x
    x = 98,041,195,248.12/289,243.09
  6. Step 6: Final answer
    x = 338,957.78

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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.