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Finding the Fourth Proportional to 342,865.88, 514,380.92 and 143,075.12

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Solution

The fourth proportional to 342,865.88, 514,380.92 and 143,075.12 is: 214,646.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,865.88 : 514,380.92 = 143,075.12 : x
  2. Step 2: Convert to fraction form
    342,865.88/514,380.92 = 143,075.12/x
  3. Step 3: Cross multiply
    342,865.88x = 514,380.92 × 143,075.12
  4. Step 4: Simplify right side
    342,865.88x = 73,595,111,854.71
  5. Step 5: Solve for x
    x = 73,595,111,854.71/342,865.88
  6. Step 6: Final answer
    x = 214,646.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.