Home / 210,638,747.28-315,988,345.20-65,085,018

Finding the Fourth Proportional to 210,638,747.28, 315,988,345.20 and 65,085,018

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Solution

The fourth proportional to 210,638,747.28, 315,988,345.20 and 65,085,018 is: 97,636,865.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,638,747.28 : 315,988,345.20 = 65,085,018 : x
  2. Step 2: Convert to fraction form
    210,638,747.28/315,988,345.20 = 65,085,018/x
  3. Step 3: Cross multiply
    210,638,747.28x = 315,988,345.20 × 65,085,018
  4. Step 4: Simplify right side
    210,638,747.28x = 20,566,107,135,132,212
  5. Step 5: Solve for x
    x = 20,566,107,135,132,212/210,638,747.28
  6. Step 6: Final answer
    x = 97,636,865.96

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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.