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Finding the Fourth Proportional to 342,430.28, 472,567.70 and 189,465.98

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Solution

The fourth proportional to 342,430.28, 472,567.70 and 189,465.98 is: 261,470.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,430.28 : 472,567.70 = 189,465.98 : x
  2. Step 2: Convert to fraction form
    342,430.28/472,567.70 = 189,465.98/x
  3. Step 3: Cross multiply
    342,430.28x = 472,567.70 × 189,465.98
  4. Step 4: Simplify right side
    342,430.28x = 89,535,499,086.68
  5. Step 5: Solve for x
    x = 89,535,499,086.68/342,430.28
  6. Step 6: Final answer
    x = 261,470.74

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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.