Home / 311,987,200.65-430,537,075.11-172,754,973.06

Finding the Fourth Proportional to 311,987,200.65, 430,537,075.11 and 172,754,973.06

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Solution

The fourth proportional to 311,987,200.65, 430,537,075.11 and 172,754,973.06 is: 238,398,949.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,987,200.65 : 430,537,075.11 = 172,754,973.06 : x
  2. Step 2: Convert to fraction form
    311,987,200.65/430,537,075.11 = 172,754,973.06/x
  3. Step 3: Cross multiply
    311,987,200.65x = 430,537,075.11 × 172,754,973.06
  4. Step 4: Simplify right side
    311,987,200.65x = 74,377,420,810,344,736
  5. Step 5: Solve for x
    x = 74,377,420,810,344,736/311,987,200.65
  6. Step 6: Final answer
    x = 238,398,949.24

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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.