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Finding the Fourth Proportional to 342,440.82, 513,646.47 and 89,715.74

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Solution

The fourth proportional to 342,440.82, 513,646.47 and 89,715.74 is: 134,569.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,440.82 : 513,646.47 = 89,715.74 : x
  2. Step 2: Convert to fraction form
    342,440.82/513,646.47 = 89,715.74/x
  3. Step 3: Cross multiply
    342,440.82x = 513,646.47 × 89,715.74
  4. Step 4: Simplify right side
    342,440.82x = 46,082,170,586.21
  5. Step 5: Solve for x
    x = 46,082,170,586.21/342,440.82
  6. Step 6: Final answer
    x = 134,569.74

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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.