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Finding the Fourth Proportional to 342,461.79, 513,823.91 and 129,214.71

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Solution

The fourth proportional to 342,461.79, 513,823.91 and 129,214.71 is: 193,871.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,461.79 : 513,823.91 = 129,214.71 : x
  2. Step 2: Convert to fraction form
    342,461.79/513,823.91 = 129,214.71/x
  3. Step 3: Cross multiply
    342,461.79x = 513,823.91 × 129,214.71
  4. Step 4: Simplify right side
    342,461.79x = 66,393,606,875.64
  5. Step 5: Solve for x
    x = 66,393,606,875.64/342,461.79
  6. Step 6: Final answer
    x = 193,871.58

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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.