Home / 218,610,008.16-327,972,443.08-78,564,605.12

Finding the Fourth Proportional to 218,610,008.16, 327,972,443.08 and 78,564,605.12

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Solution

The fourth proportional to 218,610,008.16, 327,972,443.08 and 78,564,605.12 is: 117,867,547.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,610,008.16 : 327,972,443.08 = 78,564,605.12 : x
  2. Step 2: Convert to fraction form
    218,610,008.16/327,972,443.08 = 78,564,605.12/x
  3. Step 3: Cross multiply
    218,610,008.16x = 327,972,443.08 × 78,564,605.12
  4. Step 4: Simplify right side
    218,610,008.16x = 25,767,025,480,821,876
  5. Step 5: Solve for x
    x = 25,767,025,480,821,876/218,610,008.16
  6. Step 6: Final answer
    x = 117,867,547.32

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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.