Home / 442,506,081.20-663,759,121.80-212,923,569.20

Finding the Fourth Proportional to 442,506,081.20, 663,759,121.80 and 212,923,569.20

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Solution

The fourth proportional to 442,506,081.20, 663,759,121.80 and 212,923,569.20 is: 319,385,353.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,506,081.20 : 663,759,121.80 = 212,923,569.20 : x
  2. Step 2: Convert to fraction form
    442,506,081.20/663,759,121.80 = 212,923,569.20/x
  3. Step 3: Cross multiply
    442,506,081.20x = 663,759,121.80 × 212,923,569.20
  4. Step 4: Simplify right side
    442,506,081.20x = 141,329,961,302,713,504
  5. Step 5: Solve for x
    x = 141,329,961,302,713,504/442,506,081.20
  6. Step 6: Final answer
    x = 319,385,353.80

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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.