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Finding the Fourth Proportional to 308,068.34, 425,119.10 and 172,075.20

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Solution

The fourth proportional to 308,068.34, 425,119.10 and 172,075.20 is: 237,455.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,068.34 : 425,119.10 = 172,075.20 : x
  2. Step 2: Convert to fraction form
    308,068.34/425,119.10 = 172,075.20/x
  3. Step 3: Cross multiply
    308,068.34x = 425,119.10 × 172,075.20
  4. Step 4: Simplify right side
    308,068.34x = 73,152,453,295.94
  5. Step 5: Solve for x
    x = 73,152,453,295.94/308,068.34
  6. Step 6: Final answer
    x = 237,455.28

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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.