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Finding the Fourth Proportional to 342,005.40, 513,007.56 and 92,687.40

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Solution

The fourth proportional to 342,005.40, 513,007.56 and 92,687.40 is: 139,030.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,005.40 : 513,007.56 = 92,687.40 : x
  2. Step 2: Convert to fraction form
    342,005.40/513,007.56 = 92,687.40/x
  3. Step 3: Cross multiply
    342,005.40x = 513,007.56 × 92,687.40
  4. Step 4: Simplify right side
    342,005.40x = 47,549,336,916.74
  5. Step 5: Solve for x
    x = 47,549,336,916.74/342,005.40
  6. Step 6: Final answer
    x = 139,030.95

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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.