Home / 312,169,465.95-430,759,104.12-172,905,351.90

Finding the Fourth Proportional to 312,169,465.95, 430,759,104.12 and 172,905,351.90

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Solution

The fourth proportional to 312,169,465.95, 430,759,104.12 and 172,905,351.90 is: 238,590,133.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,169,465.95 : 430,759,104.12 = 172,905,351.90 : x
  2. Step 2: Convert to fraction form
    312,169,465.95/430,759,104.12 = 172,905,351.90/x
  3. Step 3: Cross multiply
    312,169,465.95x = 430,759,104.12 × 172,905,351.90
  4. Step 4: Simplify right side
    312,169,465.95x = 74,480,554,481,997,344
  5. Step 5: Solve for x
    x = 74,480,554,481,997,344/312,169,465.95
  6. Step 6: Final answer
    x = 238,590,133.26

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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.