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Finding the Fourth Proportional to 306,239.90, 459,421.17 and 171,495.59

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Solution

The fourth proportional to 306,239.90, 459,421.17 and 171,495.59 is: 257,277.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,239.90 : 459,421.17 = 171,495.59 : x
  2. Step 2: Convert to fraction form
    306,239.90/459,421.17 = 171,495.59/x
  3. Step 3: Cross multiply
    306,239.90x = 459,421.17 × 171,495.59
  4. Step 4: Simplify right side
    306,239.90x = 78,788,703,711.81
  5. Step 5: Solve for x
    x = 78,788,703,711.81/306,239.90
  6. Step 6: Final answer
    x = 257,277.72

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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.