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Finding the Fourth Proportional to 316,907.20, 437,343.98 and 180,963.28

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Solution

The fourth proportional to 316,907.20, 437,343.98 and 180,963.28 is: 249,736.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,907.20 : 437,343.98 = 180,963.28 : x
  2. Step 2: Convert to fraction form
    316,907.20/437,343.98 = 180,963.28/x
  3. Step 3: Cross multiply
    316,907.20x = 437,343.98 × 180,963.28
  4. Step 4: Simplify right side
    316,907.20x = 79,143,201,109.05
  5. Step 5: Solve for x
    x = 79,143,201,109.05/316,907.20
  6. Step 6: Final answer
    x = 249,736.20

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1.5x scale

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.