Home / 385,442,270.76-531,911,013.54-209,230,388.16

Finding the Fourth Proportional to 385,442,270.76, 531,911,013.54 and 209,230,388.16

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Solution

The fourth proportional to 385,442,270.76, 531,911,013.54 and 209,230,388.16 is: 288,738,304.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,442,270.76 : 531,911,013.54 = 209,230,388.16 : x
  2. Step 2: Convert to fraction form
    385,442,270.76/531,911,013.54 = 209,230,388.16/x
  3. Step 3: Cross multiply
    385,442,270.76x = 531,911,013.54 × 209,230,388.16
  4. Step 4: Simplify right side
    385,442,270.76x = 111,291,947,829,553,216
  5. Step 5: Solve for x
    x = 111,291,947,829,553,216/385,442,270.76
  6. Step 6: Final answer
    x = 288,738,304.73

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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.