Home / 385,303,423.55-531,718,728.03-209,091,418.65

Finding the Fourth Proportional to 385,303,423.55, 531,718,728.03 and 209,091,418.65

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Solution

The fourth proportional to 385,303,423.55, 531,718,728.03 and 209,091,418.65 is: 288,546,159.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,303,423.55 : 531,718,728.03 = 209,091,418.65 : x
  2. Step 2: Convert to fraction form
    385,303,423.55/531,718,728.03 = 209,091,418.65/x
  3. Step 3: Cross multiply
    385,303,423.55x = 531,718,728.03 × 209,091,418.65
  4. Step 4: Simplify right side
    385,303,423.55x = 111,177,823,165,520,768
  5. Step 5: Solve for x
    x = 111,177,823,165,520,768/385,303,423.55
  6. Step 6: Final answer
    x = 288,546,159.65

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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.