Home / 258,054,934.40-387,082,401.60-66,578,710.40

Finding the Fourth Proportional to 258,054,934.40, 387,082,401.60 and 66,578,710.40

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Solution

The fourth proportional to 258,054,934.40, 387,082,401.60 and 66,578,710.40 is: 99,868,065.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,054,934.40 : 387,082,401.60 = 66,578,710.40 : x
  2. Step 2: Convert to fraction form
    258,054,934.40/387,082,401.60 = 66,578,710.40/x
  3. Step 3: Cross multiply
    258,054,934.40x = 387,082,401.60 × 66,578,710.40
  4. Step 4: Simplify right side
    258,054,934.40x = 25,771,447,117,062,896
  5. Step 5: Solve for x
    x = 25,771,447,117,062,896/258,054,934.40
  6. Step 6: Final answer
    x = 99,868,065.60

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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.