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Finding the Fourth Proportional to 316,900.09, 475,030.27 and 198,654.47

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Solution

The fourth proportional to 316,900.09, 475,030.27 and 198,654.47 is: 297,781.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,900.09 : 475,030.27 = 198,654.47 : x
  2. Step 2: Convert to fraction form
    316,900.09/475,030.27 = 198,654.47/x
  3. Step 3: Cross multiply
    316,900.09x = 475,030.27 × 198,654.47
  4. Step 4: Simplify right side
    316,900.09x = 94,366,886,520.81
  5. Step 5: Solve for x
    x = 94,366,886,520.81/316,900.09
  6. Step 6: Final answer
    x = 297,781.19

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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.