Home / 261,391,974.62-392,130,552.80-77,178,072.22

Finding the Fourth Proportional to 261,391,974.62, 392,130,552.80 and 77,178,072.22

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Solution

The fourth proportional to 261,391,974.62, 392,130,552.80 and 77,178,072.22 is: 115,779,683.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,391,974.62 : 392,130,552.80 = 77,178,072.22 : x
  2. Step 2: Convert to fraction form
    261,391,974.62/392,130,552.80 = 77,178,072.22/x
  3. Step 3: Cross multiply
    261,391,974.62x = 392,130,552.80 × 77,178,072.22
  4. Step 4: Simplify right side
    261,391,974.62x = 30,263,880,121,320,384
  5. Step 5: Solve for x
    x = 30,263,880,121,320,384/261,391,974.62
  6. Step 6: Final answer
    x = 115,779,683.62

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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.