Home / 312,169,466.70-430,759,105.16-172,905,352.65

Finding the Fourth Proportional to 312,169,466.70, 430,759,105.16 and 172,905,352.65

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Solution

The fourth proportional to 312,169,466.70, 430,759,105.16 and 172,905,352.65 is: 238,590,134.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,169,466.70 : 430,759,105.16 = 172,905,352.65 : x
  2. Step 2: Convert to fraction form
    312,169,466.70/430,759,105.16 = 172,905,352.65/x
  3. Step 3: Cross multiply
    312,169,466.70x = 430,759,105.16 × 172,905,352.65
  4. Step 4: Simplify right side
    312,169,466.70x = 74,480,554,984,023,712
  5. Step 5: Solve for x
    x = 74,480,554,984,023,712/312,169,466.70
  6. Step 6: Final answer
    x = 238,590,134.30

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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.