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Finding the Fourth Proportional to 342,464.80, 514,280.40 and 243,320.80

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Solution

The fourth proportional to 342,464.80, 514,280.40 and 243,320.80 is: 365,395.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,464.80 : 514,280.40 = 243,320.80 : x
  2. Step 2: Convert to fraction form
    342,464.80/514,280.40 = 243,320.80/x
  3. Step 3: Cross multiply
    342,464.80x = 514,280.40 × 243,320.80
  4. Step 4: Simplify right side
    342,464.80x = 125,135,118,352.32
  5. Step 5: Solve for x
    x = 125,135,118,352.32/342,464.80
  6. Step 6: Final answer
    x = 365,395.56

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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.