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Finding the Fourth Proportional to 302,555.40, 453,141.90 and 178,139.40

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Solution

The fourth proportional to 302,555.40, 453,141.90 and 178,139.40 is: 266,802.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,555.40 : 453,141.90 = 178,139.40 : x
  2. Step 2: Convert to fraction form
    302,555.40/453,141.90 = 178,139.40/x
  3. Step 3: Cross multiply
    302,555.40x = 453,141.90 × 178,139.40
  4. Step 4: Simplify right side
    302,555.40x = 80,722,426,180.86
  5. Step 5: Solve for x
    x = 80,722,426,180.86/302,555.40
  6. Step 6: Final answer
    x = 266,802.13

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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.