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Finding the Fourth Proportional to 340,988.40, 511,484.22 and 104,330.70

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Solution

The fourth proportional to 340,988.40, 511,484.22 and 104,330.70 is: 156,496.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,988.40 : 511,484.22 = 104,330.70 : x
  2. Step 2: Convert to fraction form
    340,988.40/511,484.22 = 104,330.70/x
  3. Step 3: Cross multiply
    340,988.40x = 511,484.22 × 104,330.70
  4. Step 4: Simplify right side
    340,988.40x = 53,363,506,711.55
  5. Step 5: Solve for x
    x = 53,363,506,711.55/340,988.40
  6. Step 6: Final answer
    x = 156,496.55

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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.