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Finding the Fourth Proportional to 342,860.10, 514,290.15 and 143,114.10

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Solution

The fourth proportional to 342,860.10, 514,290.15 and 143,114.10 is: 214,671.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,860.10 : 514,290.15 = 143,114.10 : x
  2. Step 2: Convert to fraction form
    342,860.10/514,290.15 = 143,114.10/x
  3. Step 3: Cross multiply
    342,860.10x = 514,290.15 × 143,114.10
  4. Step 4: Simplify right side
    342,860.10x = 73,602,171,956.12
  5. Step 5: Solve for x
    x = 73,602,171,956.12/342,860.10
  6. Step 6: Final answer
    x = 214,671.15

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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.