Home / 354,973.29-489,926.27-209,772.89

Finding the Fourth Proportional to 354,973.29, 489,926.27 and 209,772.89

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Solution

The fourth proportional to 354,973.29, 489,926.27 and 209,772.89 is: 289,523.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,973.29 : 489,926.27 = 209,772.89 : x
  2. Step 2: Convert to fraction form
    354,973.29/489,926.27 = 209,772.89/x
  3. Step 3: Cross multiply
    354,973.29x = 489,926.27 × 209,772.89
  4. Step 4: Simplify right side
    354,973.29x = 102,773,249,456.85
  5. Step 5: Solve for x
    x = 102,773,249,456.85/354,973.29
  6. Step 6: Final answer
    x = 289,523.90

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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.