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Finding the Fourth Proportional to 316,897.92, 436,397.40 and 296,636.76

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Solution

The fourth proportional to 316,897.92, 436,397.40 and 296,636.76 is: 408,495.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,897.92 : 436,397.40 = 296,636.76 : x
  2. Step 2: Convert to fraction form
    316,897.92/436,397.40 = 296,636.76/x
  3. Step 3: Cross multiply
    316,897.92x = 436,397.40 × 296,636.76
  4. Step 4: Simplify right side
    316,897.92x = 129,451,510,808.42
  5. Step 5: Solve for x
    x = 129,451,510,808.42/316,897.92
  6. Step 6: Final answer
    x = 408,495.93

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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.