Home / 212,911,623.65-319,402,472.84-65,355,478.85

Finding the Fourth Proportional to 212,911,623.65, 319,402,472.84 and 65,355,478.85

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Solution

The fourth proportional to 212,911,623.65, 319,402,472.84 and 65,355,478.85 is: 98,043,973.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,911,623.65 : 319,402,472.84 = 65,355,478.85 : x
  2. Step 2: Convert to fraction form
    212,911,623.65/319,402,472.84 = 65,355,478.85/x
  3. Step 3: Cross multiply
    212,911,623.65x = 319,402,472.84 × 65,355,478.85
  4. Step 4: Simplify right side
    212,911,623.65x = 20,874,701,558,005,540
  5. Step 5: Solve for x
    x = 20,874,701,558,005,540/212,911,623.65
  6. Step 6: Final answer
    x = 98,043,973.36

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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.