Home / 489,320.80-733,981.20-209,384.80

Finding the Fourth Proportional to 489,320.80, 733,981.20 and 209,384.80

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Solution

The fourth proportional to 489,320.80, 733,981.20 and 209,384.80 is: 314,077.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,320.80 : 733,981.20 = 209,384.80 : x
  2. Step 2: Convert to fraction form
    489,320.80/733,981.20 = 209,384.80/x
  3. Step 3: Cross multiply
    489,320.80x = 733,981.20 × 209,384.80
  4. Step 4: Simplify right side
    489,320.80x = 153,684,506,765.76
  5. Step 5: Solve for x
    x = 153,684,506,765.76/489,320.80
  6. Step 6: Final answer
    x = 314,077.20

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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.