Home / 385,988,300.33-532,667,967.95-209,776,304.79

Finding the Fourth Proportional to 385,988,300.33, 532,667,967.95 and 209,776,304.79

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Solution

The fourth proportional to 385,988,300.33, 532,667,967.95 and 209,776,304.79 is: 289,493,536.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,988,300.33 : 532,667,967.95 = 209,776,304.79 : x
  2. Step 2: Convert to fraction form
    385,988,300.33/532,667,967.95 = 209,776,304.79/x
  3. Step 3: Cross multiply
    385,988,300.33x = 532,667,967.95 × 209,776,304.79
  4. Step 4: Simplify right side
    385,988,300.33x = 111,741,117,997,073,584
  5. Step 5: Solve for x
    x = 111,741,117,997,073,584/385,988,300.33
  6. Step 6: Final answer
    x = 289,493,536.21

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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.