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Finding the Fourth Proportional to 340,391.55, 510,532.65 and 103,679.18

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Solution

The fourth proportional to 340,391.55, 510,532.65 and 103,679.18 is: 155,502.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,391.55 : 510,532.65 = 103,679.18 : x
  2. Step 2: Convert to fraction form
    340,391.55/510,532.65 = 103,679.18/x
  3. Step 3: Cross multiply
    340,391.55x = 510,532.65 × 103,679.18
  4. Step 4: Simplify right side
    340,391.55x = 52,931,606,515.23
  5. Step 5: Solve for x
    x = 52,931,606,515.23/340,391.55
  6. Step 6: Final answer
    x = 155,502.12

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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.