Home / 380,976,304.92-571,521,242.79-135,312,300.78

Finding the Fourth Proportional to 380,976,304.92, 571,521,242.79 and 135,312,300.78

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Solution

The fourth proportional to 380,976,304.92, 571,521,242.79 and 135,312,300.78 is: 202,988,619.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,976,304.92 : 571,521,242.79 = 135,312,300.78 : x
  2. Step 2: Convert to fraction form
    380,976,304.92/571,521,242.79 = 135,312,300.78/x
  3. Step 3: Cross multiply
    380,976,304.92x = 571,521,242.79 × 135,312,300.78
  4. Step 4: Simplify right side
    380,976,304.92x = 77,333,854,306,559,888
  5. Step 5: Solve for x
    x = 77,333,854,306,559,888/380,976,304.92
  6. Step 6: Final answer
    x = 202,988,619.79

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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.