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Finding the Fourth Proportional to 389,007.40, 536,310.30 and 291,798.04

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Solution

The fourth proportional to 389,007.40, 536,310.30 and 291,798.04 is: 402,291.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,007.40 : 536,310.30 = 291,798.04 : x
  2. Step 2: Convert to fraction form
    389,007.40/536,310.30 = 291,798.04/x
  3. Step 3: Cross multiply
    389,007.40x = 536,310.30 × 291,798.04
  4. Step 4: Simplify right side
    389,007.40x = 156,494,294,371.81
  5. Step 5: Solve for x
    x = 156,494,294,371.81/389,007.40
  6. Step 6: Final answer
    x = 402,291.30

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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.