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Finding the Fourth Proportional to 343,643.40, 515,594.70 and 166,307.40

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Solution

The fourth proportional to 343,643.40, 515,594.70 and 166,307.40 is: 249,523.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,643.40 : 515,594.70 = 166,307.40 : x
  2. Step 2: Convert to fraction form
    343,643.40/515,594.70 = 166,307.40/x
  3. Step 3: Cross multiply
    343,643.40x = 515,594.70 × 166,307.40
  4. Step 4: Simplify right side
    343,643.40x = 85,747,214,010.78
  5. Step 5: Solve for x
    x = 85,747,214,010.78/343,643.40
  6. Step 6: Final answer
    x = 249,523.82

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1.5x scale

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.