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Finding the Fourth Proportional to 686,750.40, 1,030,109.40 and 188,114.40

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Solution

The fourth proportional to 686,750.40, 1,030,109.40 and 188,114.40 is: 282,167.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,750.40 : 1,030,109.40 = 188,114.40 : x
  2. Step 2: Convert to fraction form
    686,750.40/1,030,109.40 = 188,114.40/x
  3. Step 3: Cross multiply
    686,750.40x = 1,030,109.40 × 188,114.40
  4. Step 4: Simplify right side
    686,750.40x = 193,778,411,715.36
  5. Step 5: Solve for x
    x = 193,778,411,715.36/686,750.40
  6. Step 6: Final answer
    x = 282,167.16

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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.