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Finding the Fourth Proportional to 536,426.31, 740,082.20 and 342,947.28

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Solution

The fourth proportional to 536,426.31, 740,082.20 and 342,947.28 is: 473,148.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,426.31 : 740,082.20 = 342,947.28 : x
  2. Step 2: Convert to fraction form
    536,426.31/740,082.20 = 342,947.28/x
  3. Step 3: Cross multiply
    536,426.31x = 740,082.20 × 342,947.28
  4. Step 4: Simplify right side
    536,426.31x = 253,809,175,751.68
  5. Step 5: Solve for x
    x = 253,809,175,751.68/536,426.31
  6. Step 6: Final answer
    x = 473,148.26

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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.