Home / 288,989.07-433,548.18-139,355.21

Finding the Fourth Proportional to 288,989.07, 433,548.18 and 139,355.21

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Solution

The fourth proportional to 288,989.07, 433,548.18 and 139,355.21 is: 209,063.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,989.07 : 433,548.18 = 139,355.21 : x
  2. Step 2: Convert to fraction form
    288,989.07/433,548.18 = 139,355.21/x
  3. Step 3: Cross multiply
    288,989.07x = 433,548.18 × 139,355.21
  4. Step 4: Simplify right side
    288,989.07x = 60,417,197,669.02
  5. Step 5: Solve for x
    x = 60,417,197,669.02/288,989.07
  6. Step 6: Final answer
    x = 209,063.95

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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.