Home / 380,976,323.42-571,521,270.54-135,312,319.28

Finding the Fourth Proportional to 380,976,323.42, 571,521,270.54 and 135,312,319.28

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Solution

The fourth proportional to 380,976,323.42, 571,521,270.54 and 135,312,319.28 is: 202,988,647.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,976,323.42 : 571,521,270.54 = 135,312,319.28 : x
  2. Step 2: Convert to fraction form
    380,976,323.42/571,521,270.54 = 135,312,319.28/x
  3. Step 3: Cross multiply
    380,976,323.42x = 571,521,270.54 × 135,312,319.28
  4. Step 4: Simplify right side
    380,976,323.42x = 77,333,868,634,619,728
  5. Step 5: Solve for x
    x = 77,333,868,634,619,728/380,976,323.42
  6. Step 6: Final answer
    x = 202,988,647.54

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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.