Home / 458,628.40-688,051.95-221,776.30

Finding the Fourth Proportional to 458,628.40, 688,051.95 and 221,776.30

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Solution

The fourth proportional to 458,628.40, 688,051.95 and 221,776.30 is: 332,717.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,628.40 : 688,051.95 = 221,776.30 : x
  2. Step 2: Convert to fraction form
    458,628.40/688,051.95 = 221,776.30/x
  3. Step 3: Cross multiply
    458,628.40x = 688,051.95 × 221,776.30
  4. Step 4: Simplify right side
    458,628.40x = 152,593,615,678.79
  5. Step 5: Solve for x
    x = 152,593,615,678.79/458,628.40
  6. Step 6: Final answer
    x = 332,717.33

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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.