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Finding the Fourth Proportional to 342,318.95, 472,363.80 and 189,332.83

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Solution

The fourth proportional to 342,318.95, 472,363.80 and 189,332.83 is: 261,259.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,318.95 : 472,363.80 = 189,332.83 : x
  2. Step 2: Convert to fraction form
    342,318.95/472,363.80 = 189,332.83/x
  3. Step 3: Cross multiply
    342,318.95x = 472,363.80 × 189,332.83
  4. Step 4: Simplify right side
    342,318.95x = 89,433,972,681.74
  5. Step 5: Solve for x
    x = 89,433,972,681.74/342,318.95
  6. Step 6: Final answer
    x = 261,259.20

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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.