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Finding the Fourth Proportional to 343,363.32, 514,831.75 and 143,438.72

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Solution

The fourth proportional to 343,363.32, 514,831.75 and 143,438.72 is: 215,069.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,363.32 : 514,831.75 = 143,438.72 : x
  2. Step 2: Convert to fraction form
    343,363.32/514,831.75 = 143,438.72/x
  3. Step 3: Cross multiply
    343,363.32x = 514,831.75 × 143,438.72
  4. Step 4: Simplify right side
    343,363.32x = 73,846,804,302.60
  5. Step 5: Solve for x
    x = 73,846,804,302.60/343,363.32
  6. Step 6: Final answer
    x = 215,069.00

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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.