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Finding the Fourth Proportional to 191,306.60, 286,959.90 and 161,782.10

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Solution

The fourth proportional to 191,306.60, 286,959.90 and 161,782.10 is: 242,673.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,306.60 : 286,959.90 = 161,782.10 : x
  2. Step 2: Convert to fraction form
    191,306.60/286,959.90 = 161,782.10/x
  3. Step 3: Cross multiply
    191,306.60x = 286,959.90 × 161,782.10
  4. Step 4: Simplify right side
    191,306.60x = 46,424,975,237.79
  5. Step 5: Solve for x
    x = 46,424,975,237.79/191,306.60
  6. Step 6: Final answer
    x = 242,673.15

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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.