Home / 312,164,030.82-430,754,967.18-172,908,774.12

Finding the Fourth Proportional to 312,164,030.82, 430,754,967.18 and 172,908,774.12

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Solution

The fourth proportional to 312,164,030.82, 430,754,967.18 and 172,908,774.12 is: 238,596,718.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,164,030.82 : 430,754,967.18 = 172,908,774.12 : x
  2. Step 2: Convert to fraction form
    312,164,030.82/430,754,967.18 = 172,908,774.12/x
  3. Step 3: Cross multiply
    312,164,030.82x = 430,754,967.18 × 172,908,774.12
  4. Step 4: Simplify right side
    312,164,030.82x = 74,481,313,321,194,640
  5. Step 5: Solve for x
    x = 74,481,313,321,194,640/312,164,030.82
  6. Step 6: Final answer
    x = 238,596,718.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.